serious

grave, sérieux

Qui demande une attention particulière à cause de son importance ou des dommages possibles.

En anglais simple : Important enough to need careful attention, often because it could cause harm.

• This is a serious problem.
• Nobody suffered serious injuries in the crash.
• Ignoring that warning could have serious consequences.

Synonymes : major, grave, important

Contraires : minor, trivial

Expressions courantes : serious problem, serious injury, serious damage, serious consequences

sérieux, sincère

Qui pense vraiment ce qu’il dit ou veut réellement faire quelque chose, sans plaisanter.

En anglais simple : Meaning what you say or truly intending to do something, rather than joking.

• Are you serious?
• He was serious when he offered to help.
• I'm serious about learning to swim this year.

Comment l'utiliser : serious about something/doing something (She is serious about moving abroad.)

Synonymes : sincere, in earnest

Contraires : joking, insincere

Expressions courantes : are you serious, serious about something, completely serious, serious offer

sérieux, grave

Dont le visage ou le comportement montre peu de gaieté ou d’humour.

En anglais simple : Showing little happiness or humour in your face or behaviour.

• She looked very serious.
• His serious expression made everyone fall silent.
• He was a quiet, serious child who rarely smiled.

Synonymes : solemn, grave, unsmiling

Contraires : cheerful, lighthearted

Expressions courantes : serious expression, serious face, look serious, serious manner