május

Mõjus is an Estonian adjective meaning effective, influential or having a strong effect. It describes something that produces a noticeable result or exerts influence, and is used of measures, arguments, artistic works, medicines, and other phenomena that are powerful or impactful.

The word is etymologically related to the noun mõju (effect, influence) and the verb mõjutama (to influence). In usage it commonly qualifies both concrete and abstract subjects: for example a mõjus argument, a mõjus ravim, or a mõjus visuaalne kujundus. The comparative form is mõjusam and the most effective is typically expressed periphrastically as kõige mõjusam.

Mõjus appears across registers, from journalistic and academic discourse to everyday speech, and can carry neutral descriptive force or evaluative approval depending on context. Adverbial and derivative forms include mõjusalt (effectively) and mõjusus (effectiveness, potency). Related concepts in Estonian lexical field include mõju (effect), mõjuv (having influence), and mõjuvõim (power of influence).

As a lexical item, mõjus is part of common vocabulary for discussing efficacy, impact and persuasiveness in social, medical, cultural and political contexts.