serious

• Qui est important, grave ou nécessite une réflexion approfondie ; qui n'est pas léger ou insignifiant.

Describes something that is important, grave, or requiring careful thought; not lighthearted or trivial.

1. Important or requiring thoughtA2formal

   Needing careful consideration or attention; not trivial.

   qui mérite réflexion

   • This is a serious matter that needs to be discussed.
   • She gave a serious speech about climate change.
   • We need to have a serious conversation about your future.

   Synonymesconsequentialconsiderablecriticalgraveimportantmomentouspressingsignificanturgentweighty

   Antonymesfrivolousinsignificantminorsuperficialtrivialunimportant

2. Not joking or playfulA2formal

   Showing a lack of humor; earnest and sincere.

   Sérieux, sans plaisanterie

   • He looked serious when he gave the news.
   • Are you serious about quitting your job?
   • She has a serious expression on her face.

   Synonymesearnestgravehumorlesssinceresobersolemnsternunsmiling

   Antonymesfacetiousflippantfrivolousfunnyhumorousjokingplayfulwaggish

3. Severe or dangerousB1formal

   Having potentially harmful or grave consequences.

   grave, dangereux

   • He suffered a serious injury in the accident.
   • The storm caused serious damage to the town.
   • This is a serious illness that requires immediate treatment.

   Synonymesacuteconsequentialcriticaldangerousdiregravemomentoussevereurgent

   Antonymesharmlessinsignificantminornegligibleslighttrivial

4. Significant in amount or degreeB1informal

   Large in size, amount, or extent.

   important / considérable

   • They made a serious amount of money from the deal.
   • There is a serious lack of resources in the area.
   • She has a serious talent for painting.

   Synonymesappreciablebigconsiderablelargemarkedsignificantsizeablesubstantial

   Antonymesinsignificantminornegligibleslighttrivial