It’d be silly to give up now. Ce serait bête d’abandonner maintenant.
Stop being silly now. Arrête de faire l’idiot maintenant.
1 unimportant -- stupide
2 foolish; not sensible -- bête, idiot
silly children.
Don’t be so silly!
It is particularly silly for a minister of a state which exports 90% of its produce to do so.
In those circumstances it would be silly not to widen the agenda.
It is time to give up that silly myth.