vihastua

Vihastua is a Finnish intransitive verb meaning "to become angry" or "to get upset." It describes a change of emotional state and is commonly used in everyday speech. Typical conjugation patterns include vihastun, vihastut, vihastuu (present) and vihastuin, vihastuit, vihastui (past). A passive form vihastutaan conveys a general or impersonal sense ("one gets angry").

The verb frequently appears with expressions indicating the cause or target of the anger: vihastua jostakin (to get angry about something) and vihastua jollekin (to get angry at someone). Related lexical items include the noun viha (anger), the adjective vihainen (angry) and the causative verb vihastuttaa (to make someone angry). The nominalized process is vihastuminen (becoming angry).

Etymologically vihastua is derived from the root viha with the verbalizing suffix -stua, forming a word that denotes entering the state associated with viha. Synonyms and near-synonyms in Finnish include suuttua (to get angry) and raivostua (to become furious), which differ mainly in intensity and register. Vihastua is neutral and versatile, used in both colloquial and formal contexts. Typical collocations emphasize cause, degree or frequency, as in helposti vihastua (to get angry easily) or vakavasti vihastua (to become seriously angry).