Conjugate stem-changing (e > ie) semi-regular -ir verbs in El Presente (present tense)

Some common Spanish verbs hervir, mentir, sugerir (and more below) ending in -ir are semi-regular in El Presente because some of their stems change :

  HERVIR
to boil
MENTIR
to lie
SUGERIR
to suggest
 yo hiervo miento sugiero
  hierves mientes sugieres

él / ella / usted 

hierve miente sugiere
nosotros / nosotras 
hervimos mentimos sugerimos
vosotros / vosotras 
hervís mentís sugerís
ellos / ellas / ustedes 
hierven mienten sugieren

Notice how the vowel -e- in the stem that is closer to the end of the word becomes-ie- except for the nosotros and vosotros forms.

Look at and listen to these examples:


Hiervo los huevos durante 10 minutos y los añado a la ensalada.I boil the eggs for 10 minutes  and I add them to the salad.

¿Por qué mientes?Why do you lie?

Ella nos sugiere que cojamos un taxi en vez del autobús.She suggests that we take a cab instead of the bus.

Nosotros nunca mentimos.We never lie.

Os hierve la sangre del estrés en el trabajo.Your blood boils because of the stress at work.

Ellos sugieren un cambio de estrategia.They suggest a change of strategy.

The essential verbs sentir (to feel) and preferir (to prefer) also follow this pattern and you can practise those on their own here:
  1. Conjugate sentir in El Presente (present tense)
  2. Conjugate preferir in El Presente (present tense)

For more verbs that follow this pattern, see:
  1. Verb list: Stem-changing (e > ie) verbs in the present tense
  2. Verb list: Stem-changing (e > ie) verbs in the present tense

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Examples and resources

Ella nos sugiere que cojamos un taxi en vez del autobús.She suggests that we take a cab instead of the bus.
Nosotros nunca mentimos.We never lie.
¿Por qué mientes?Why do you lie?
Hiervo los huevos durante 10 minutos y los añado a la ensalada.I boil the eggs for 10 minutes  and I add them to the salad.
Ellos sugieren un cambio de estrategia.They suggest a change of strategy.
Os hierve la sangre del estrés en el trabajo.Your blood boils because of the stress at work.
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