idioms

brainstorm (to discuss an issue and suggest ideas or solutions) The team also had a meeting to brainstorm some ideas.   brainstorm  American English (a clever idea) The problem is unsolvable unless someone has a brainstorm.   brainstorm  British English (a sudden inability to think clearly or act) I had …

  a leopard can’t change its spots (a person’s character will not change, even if they pretend it has) I don’t think she’ll ever stop lying to us. A leopard can’t change its spots. We expect that he will change after marriage, but he didn’t. A leopard doesn’t change its …

    a kangaroo court (an unfair and illegal court) He was to face a kangaroo court in the jungle. They held a kangaroo court and shot the robbers.   kangaroo court – English Vocabulary

a horse of a different color  informal (a situation or a subject that is completely different or unrelated) I love astronomy, but geography is a horse of a different color. Anyone can be angry, but to fight is a horse of a different color.   horse of a different color …

a guinea pig (a person used in an experiment or test) She used her husband as a guinea pig to try her new vegetarian recipes. Try it on someone else! I don’t want to serve as a guinea pig for the new drug!   guinea pig – English Vocabulary