B2AbstractAdjective

wirksam

effective

/ˈvɪʁkzaːm/

An adjective meaning 'effective', producing the desired result.

Example Sentences

Das Medikament ist sehr wirksam.

The medication is very effective.

Wirksame Maßnahmen sind nötig.

Effective measures are needed.

Der Vertrag wird ab morgen wirksam.

The contract becomes effective tomorrow.

Confusing 'wirksam' with 'wirklich'

✅ 'wirksam' = effective, 'wirklich' = real/really

Helpful tools for anyone learning German. No signup required.

92 grammar topics organized by CEFR level, from A1 beginner to C1 advanced. Each topic includes examples, common mistakes, and learning tips.

See how de-de works alongside popular German learning tools.

Master German sounds with IPA guides and practice tips.

German courses tailored to your goals.

Conjugation tables for the 100 most important German verbs.

Free interactive grammar exercises for every topic from A1 to C1.

10 daily news from Germany, adapted to your language level

AI German learning platform with error intelligence and pronunciation scoring.

Start your AI-powered German course today. No subscription — just your OpenAI API key (~$0.50/week).