effective

• Décrit ce qui produit avec succès le résultat souhaité, en étant opérationnel et en ayant un impact réel ou tangible.

Describes something that successfully produces the intended result.

1. Successful in producing a resultB1formal

   Able to achieve a desired outcome or effect.

   efficace

   • This medicine is very effective against headaches.
   • The new marketing strategy proved to be highly effective.
   • Effective communication is key to a successful team.

   Synonymescapableeffectualefficaciousfruitfulpotentproductivesuccessful

   Antonymesfutileineffectiveinefficaciousunproductiveunsuccessfuluseless

2. In operation or activeB1formal

   Starting to be used or having legal force.

   En vigueur

   • The new law becomes effective on January 1st.
   • The contract is effective from the date of signing.
   • The policy is effective immediately.

   Synonymesactivebindingcurrentin effectin forceoperativevalid

3. Impressive or strikingB2informal

   Having a strong or noticeable effect.

   Frappant / Saisissant

   • The lighting in the theater was very effective.
   • She made an effective argument during the debate.
   • The use of color in the painting is highly effective.

   Synonymescompellingconvincingdramaticforcefulimpressivepotentpowerfulstrikingtellingvivid

   Antonymesineffectiveunimpressiveweak