Question and Tough nut to crack

Question noun - An interrogative expression often used to test knowledge.

Tough nut to crack and question are semantically related In some cases you can use "Tough nut to crack" instead a noun "Question".

Nearby Words: questionable, questioning, quest, questioned, questioner

Question and tough nut to crack are semantically related in puzzle topic. You can use "Question" instead a noun phrase "Tough nut to crack", if it concerns topics such as mystery, brain-teaser.