Mugir Present Tense Conjugation in Spanish
The present tense of mugir — “to moo” in English — is the form you need for what happens now, for habits and for general truths. This page gives you the full present conjugation table for mugir with all six persons, explains exactly how the tense is formed for this verb, shows when to use it with real examples, and finishes with a quiz so you can test yourself. Mugir means to moo, the sound a cow makes. It is an animal-sound verb used on farms and in the countryside, and it is a spelling-change verb: the stem is muj- before o and a. It is a spelling-change verb (g becomes j before e), but the present tense itself is regular — the spelling change shows up in the subjunctive and the preterite. To see it in a real sentence: Mujo en el campo al amanecer. — “I moo in the fields at dawn.” Learn the six forms in the table below, and the present tense of mugir will be ready for everyday conversation.
Present tense conjugation table: mugir
Every person of mugir in the present tense. The gerund is mugiendo and the past participle is mugido.
Present indicative
| Person | Form |
|---|---|
| yo | mujo |
| tú | muges |
| él/ella/Ud. | muge |
| nosotros/as | mugimos |
| vosotros/as | mugís |
| ellos/ellas/Uds. | mugen |
How the present indicative of mugir is formed
The present indicative of mugir is built from the stem plus the present indicative endings for -ir verbs. Take the infinitive, drop the -ir ending, and add the ending that matches the person. The stem in the present is muj-, not mug-, so the first-person form is mujo. The table below shows the endings, and the full table above shows them attached to the stem.
| Person | Ending | Form |
|---|---|---|
| yo | -o | mujo |
| tú | -es | muges |
| él/ella/Ud. | -e | muge |
| nosotros/as | -imos | mugimos |
| vosotros/as | -ís | mugís |
| ellos/ellas/Uds. | -en | mugen |
Mugir is a spelling-change verb. In the present tense the forms are regular, so the table above follows the normal -ir endings. The spelling change appears when the ending starts with e: the present subjunctive is muja and the preterite first person is mugí. The sound stays the same; only the spelling changes to keep it.
The gerund of mugir is mugiendo and the past participle is mugido. Both are regular for this verb, and the participle is the form you need for all the perfect tenses with haber.
When to use the present tense of mugir
The present tense is not one single use — it covers several situations, and mugir appears in all of them. The five uses below are the ones you will meet most often, each with an example that shows the verb in a natural sentence.
Routines and habits
Use the present for things you do regularly, every day or every week. The present is the tense of routine, and mugir fits naturally into daily life.
“Yo mujo en el campo al amanecer todos los días.” — “I moo in the fields at dawn every day.”
General facts
Use the present for facts that are true in general, not just today. When you state how something is, the present is the tense to use.
“Él muge cuando llega el granjero.” — “He/she moos when the farmer arrives.”
What is happening right now
Use the present for what is happening at this moment. Spanish often uses the simple present where English uses the progressive, so mujo can mean both “I moo” and “I am mooing”.
“Ahora mismo, yo mujo toda la mañana en el prado.” — “Right now, I moo all morning in the meadow.”
Fixed plans in the near future
Use the present for a plan that is already fixed, such as something arranged for tomorrow. Spanish uses the present for near-future plans much more freely than English does.
“Mañana, yo mujo en el establo por la noche.” — “Tomorrow, I will moo in the stable at night.”
Questions and negatives
Use the present to ask about habits and to say what does not happen. The question and the negative use exactly the same forms as the statement.
“¿Tú muges en el campo al amanecer?” — “Do you moo in the fields at dawn?”
The present tense vs the closest tenses
Present — habit or general fact vs Preterite — one finished occasion
The present describes a habit, a routine or a general fact — something that happens again and again or that is true in general. The preterite reports one finished occasion in the past. Use the present when the action repeats or is still true, and the preterite when you are telling what happened once, on a specific day.
- Present — habit or general fact: Muge cuando llega el granjero. — “He/she moos when the farmer arrives.”
- Preterite — one finished occasion: Mugió cuando llega el granjero. — the same idea, placed in the preterite.
Present — now vs Imperfect — a past habit or background
The present talks about now. The imperfect talks about the past as a background — a repeated habit, an ongoing situation, something that used to happen. If you can add “used to” in English, the imperfect is usually the right choice; if it is happening now or always, use the present.
- Present — now: Mugen toda la mañana en el prado. — “They moo all morning in the meadow.”
- Imperfect — a past habit or background: Mugían toda la mañana en el prado. — the same idea, placed in the imperfect.
Present — now or a fixed plan vs Future — what will happen
The present describes what happens now, what you do regularly, or a plan that is already fixed. The future describes what will happen later — a promise, a prediction, a plan that is not yet under way. Spanish often uses the present for near-future plans, but the future is the form for a clear statement about tomorrow.
- Present — now or a fixed plan: Muges en el establo por la noche. — “You moo in the stable at night.”
- Future — what will happen: Mugirás en el establo por la noche. — the same idea, placed in the future.
Examples: mugir in the present tense
Seven sentences that show mugir in the present tense only, across all six persons. Read each one aloud, notice the ending, and check the translation.
- Yo mujo en el campo al amanecer. — “I moo in the fields at dawn.”
- Tú muges cuando llega el granjero. — “You moo when the farmer arrives.”
- Él muge toda la mañana en el prado. — “He moos all morning in the meadow.”
- Nosotros mugimos en el establo por la noche. — “We moo in the stable at night.”
- Vosotros mugís en el campo al amanecer. — “You (plural) moo in the fields at dawn.”
- Ellos mugen cuando llega el granjero. — “They moo when the farmer arrives.”
- ¿Tú muges toda la mañana en el prado? — “Do you moo all morning in the meadow?”
Common mistakes with mugir in the present tense
These are the errors learners actually make with mugir in the present tense. Each one shows the wrong form, the right form, and why the right form is right.
✗ Yo mugir en el campo al amanecer. (using the infinitive instead of a conjugated form).
✓ Correct: Yo mujo en el campo al amanecer.
The infinitive is not a conjugated form. With yo, the present tense of mugir is mujo, not the infinitive mugir.
✗ Vosotros mugis en el campo al amanecer. (forgetting the accent on the vosotros form).
✓ Correct: Vosotros mugís en el campo al amanecer.
The vosotros present form carries a written accent: mugís, not mugis. The accent marks the stressed vowel, and leaving it out is a spelling mistake.
✗ Ayer, yo mujo cuando llega el granjero. (using the present for a finished past action).
✓ Correct: Ayer, yo mugí cuando llega el granjero.
The present and the preterite are different tenses: mujo is happening now, while mugí is a finished action in the past. Use the preterite with ayer.
✗ Treating mugir and balar as identical in every context. (confusing mugir with balar).
✓ Correct: Mugir means to moo, while balar means to bleat, like a sheep.
They overlap, but each has uses the other does not: mugir fits sentences such as Mujo en el campo al amanecer, while balar belongs in a different sentence. Check the meaning you want before choosing.
Quiz: mugir in the present tense
Eight questions on the present tense of mugir. Choose the best answer for each one, then check the answer key below — every answer is explained.
1. Which is the correct present tense form of mugir for tú?
- a) muges
- b) mujo
- c) muge
- d) mugen
2. Complete the sentence: Yo ______ en el campo al amanecer. — “I moo in the fields at dawn.”
- a) muge
- b) mugimos
- c) muges
- d) mujo
3. Complete the sentence: Él ______ cuando llega el granjero. — “He/she moos when the farmer arrives.” (present tense)
- a) mugía
- b) mugirá
- c) muge
- d) mugió
4. Which is the correct present tense form of mugir for nosotros?
- a) mugen
- b) mugimos
- c) mujo
- d) muge
5. Which sentence uses mugir correctly in the present tense?
- a) Él mugió cuando llega el granjero.
- b) Él muge cuando llega el granjero.
- c) Él mugirá cuando llega el granjero.
- d) Ellos muge cuando llega el granjero.
6. Complete the sentence: Ellos ______ toda la mañana en el prado. — “They moo all morning in the meadow.”
- a) mujo
- b) muge
- c) mugimos
- d) mugen
7. Complete the question: ¿Tú ______ en el establo por la noche? — “Do you moo in the stable at night?”
- a) muge
- b) mugirás
- c) muges
- d) mujo
8. What is the gerund of mugir?
- a) mugí
- b) mugiendo
- c) mugido
- d) mujo
Answer key
a) muges — The tú form is muges. The -s ending belongs to tú in the present; mujo is yo, muge is él/ella and mugen is ellos/ellas.
d) mujo — The sentence needs the yo form in the present: mujo. The other options are the wrong person.
c) muge — The sentence needs the él/ella/Ud. form in the present: muge. The other options are the preterite, the imperfect and the future.
b) mugimos — Nosotros takes mugimos. In the present the nosotros ending for -ir verbs is -imos, attached to the stem.
b) Él muge cuando llega el granjero. — Él muge cuando llega el granjero. is correct: the verb agrees with its subject. The other sentences use the wrong person or the wrong tense.
d) mugen — The subject is ellos/ellas/Uds., so the present form is mugen.
c) muges — The question needs the tú form in the present: muges.
b) mugiendo — The gerund is mugiendo. It is the form you use with estar for the progressive (estar + gerund), and it is not the past participle mugido.
Frequently asked questions
Is mugir regular in the present tense?
Yes. Mugir is a regular -ir verb in the present tense, so the forms follow the standard endings: mujo, muges, muge, mugimos, mugís and mugen.
What is the gerund and the past participle of mugir?
The gerund is mugiendo and the past participle is mugido. Use the gerund with estar for the progressive, and the participle with haber for the perfect tenses.
How do you say “I moo” in Spanish?
Say mujo. For example: Mujo en el campo al amanecer. — “I moo in the fields at dawn.”
What is the difference between mugir and balar?
Mugir means “to moo”, while balar means “to bleat, like a sheep”. They are related words that learners often meet together, but they are not interchangeable — use mugir when you mean “to moo” and balar when you mean “to bleat, like a sheep”. The full conjugation of mugir is on its own page.
Related links
- Full conjugation of mugir — every tense and mood, with the complete tables.
- mugir examples and quiz — more sentences, dialogues and a longer quiz.
- Spanish Present tense guide — how the present tense works for all Spanish verbs.
- Spanish verbs — the full list of Spanish verbs on VerbFlow.
- Complete list of Spanish irregular verbs — where this verb's pattern is listed.
- Gruñir conjugation — another -ir verb to compare with mugir.
- Pulir conjugation — another -ir verb to compare with mugir.
- Exhibir conjugation — another -ir verb to compare with mugir.
- Present Tense Conjugator — practise this verb in the interactive tool.
- Spanish Verb Quiz — test yourself on Spanish verbs.