the mark ( ? ) used in writing after a question Topics Languagea2问号 Oxford Collocations Dictionaryadjective- big
- huge
- major
- …
- put
- hang over something
- remain
- question mark against
- question mark over
Idioms
a question mark over/against something
used to say that something is not certain 对…的疑问;画在…上的问号 Extra ExamplesTopics Doubt, guessing and certaintyc2A slight question mark against her character remains. 关于她的品德仍然存有些许疑问。 There is now a serious question mark over his leadership ability. 现在对他的领导才能存在着很大的疑问。