Proliferar means ‘to proliferate/spread’. It is a regular -ar verb: prolifero (present), proliferé (preterite), proliferado (past participle), proliferando (gerund).
Proliferar in use
Con el calor, proliferan los mosquitosMosquitoes multiply in the heat
En los últimos años han proliferado las plataformas de televisiónTelevision platforms have multiplied in recent years
Las algas proliferaron por culpa de la contaminaciónThe algae multiplied because of the pollution
On this pageIndicative
Indicative
Statements of fact, certainty and objective reality
Used almost only in the third person, and the subject often comes after the verb.
More tenses
The other perfect tenses (haber + past participle) and the past subjunctive
The imperfect subjunctive has two forms: -ra (more common in speech) and -se (more formal; still heard in speech in Spain, mainly written in Latin America). Both are equally correct and interchangeable.
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