question mark
noun1) (in punctuation) point m d'interrogation
2) (doubt)
there is a question mark about his honesty — on s'interroge quant à son honnêteté
there is a question mark about his suitability for the job — on se demande s'il est apte à occuper ce poste
there is a question mark hanging over his future — l'incertitude plane sur son avenir