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A child sneezing into a tissue while another child stands nearby, representing the spread of a cold.

contagiar

to infect

Complete conjugation tables and interactive practice exercises. This is a regular -ar verb.

The Spanish verb contagiar means to infect.

Present tense:

yocontagio
contagias
él/ella/ustedcontagia
nosotroscontagiamos
vosotroscontagiáis
ellos/ellas/ustedescontagian

Complete Conjugation Tables

Reference all tenses and moods

🔄 Conjugations

subjunctive

imperfect

ellos/ellas/ustedescontagiaran
yocontagiara
contagiaras
vosotroscontagiarais
nosotroscontagiáramos
él/ella/ustedcontagiara

The imperfect subjunctive, like 'contagiara' or 'contagiase', is used for past hypotheticals or wishes.

Forms, examples & usage →

present

ellos/ellas/ustedescontagien
yocontagie
contagies
vosotroscontagiéis
nosotroscontagiemos
él/ella/ustedcontagie

Use present subjunctive like 'contagie' after doubts, wishes, or emotions.

Forms, examples & usage →

imperative

negative

no contagies
vosotrosno contagiéis
ustedesno contagien
nosotrosno contagiemos
ustedno contagie

Use 'no contagies' (tú) for negative commands, based on the present subjunctive.

Forms, examples & usage →

affirmative

contagia
vosotroscontagiad
ustedescontagien
nosotroscontagiemos
ustedcontagie

Use imperative forms like 'contagia' (tú) for direct commands.

Forms, examples & usage →

indicative

conditional

ellos/ellas/ustedescontagiarían
yocontagiaría
contagiarías
vosotroscontagiaríais
nosotroscontagiaríamos
él/ella/ustedcontagiaría

Use conditional 'contagiaría' for hypotheticals ('would') or polite requests.

Forms, examples & usage →

preterite

ellos/ellas/ustedescontagiaron
yocontagié
contagiaste
vosotroscontagiasteis
nosotroscontagiamos
él/ella/ustedcontagió

Use the regular preterite 'contagié', 'contagiaste', 'contagió' for completed past actions.

Forms, examples & usage →

imperfect

ellos/ellas/ustedescontagiaban
yocontagiaba
contagiabas
vosotroscontagiabais
nosotroscontagiábamos
él/ella/ustedcontagiaba

Use imperfect 'contagiaba' for ongoing or habitual past actions.

Forms, examples & usage →

present

ellos/ellas/ustedescontagian
yocontagio
contagias
vosotroscontagiáis
nosotroscontagiamos
él/ella/ustedcontagia

Use the regular present tense 'contagio', 'contagias', 'contagia' for current or habitual actions.

Forms, examples & usage →

future

ellos/ellas/ustedescontagiarán
yocontagiaré
contagiarás
vosotroscontagiaréis
nosotroscontagiaremos
él/ella/ustedcontagiará

Use the future 'contagiaré', 'contagiarás' for actions that will happen.

Forms, examples & usage →

Practice Conjugations

Test your knowledge with interactive exercises

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Take contagiar from tables to real Spanish

Conjugation tables are the start. Read 200+ illustrated and narrated Spanish stories to see 'contagiar' in action across real sentences — and build the instinct that native speakers have.