suponer

to supposeirregular-er verb

Where it breaks the pattern

suponer follows poner: irregular first-person form
suponer follows poner: irregular preterite stem; the 1s and 3s endings are unstressed, so they carry no written accent
suponer follows poner: irregular future stem; the endings themselves are regular
suponer follows poner: conditional shares the irregular future stem
suponer follows poner: present subjunctive is built from the irregular yo form
suponer follows poner: imperfect subjunctive is built from the third-person preterite stem
irregular past participle

Indicativo: suponer conjugation

	Presente	Pretérito	Imperfecto	Futuro	Condicional
yo	supongo	supuse	suponía	supondré	supondría
tú	supones	supusiste	suponías	supondrás	supondrías
él / ella / Ud.	supone	supuso	suponía	supondrá	supondría
nosotros	suponemos	supusimos	suponíamos	supondremos	supondríamos
vosotros	suponéis	supusisteis	suponíais	supondréis	supondríais
ellos / Uds.	suponen	supusieron	suponían	supondrán	supondrían

Participio: supuesto · Gerundio: suponiendo

irregular form

Real sentences with the conjugated form highlighted, from Tatoeba, licensed under CC BY 2.0 FR.

These verbs are poner with a prefix, and they inherit its irregular forms.