イエスかノーかMeanings1expressionyes or no; all or nothingUsed to frame a question or situation as a binary choice, often implying that there is no middle ground or room for nuance.イエスかノーか、はっきり答こたえてください。Please give me a clear yes or no.この問もん題だいはイエスかノーかで割わり切きれるものではない。This issue can't be divided into a simple yes or no.