English Idioms: At the drop of a hat

English Idioms About “Clothes”
Idiom: At the drop of a hat
Meaning: When someone does something at the drop of a hat, they do it without delay or good reason.
Example: So many years of sacrifice and then you can leave me at the drop of a hat.

English Idioms: Jekyll and Hyde

English Idioms About “Names”
Idiom: Jekyll and Hyde
Meaning: Jekyll and Hyde refers to someone having a dual personality, one side of which is good and the other evil. The origin of the phrase comes from Robert Louis Stevenson’s The Strange Case of Dr. Jekyll and Mr. Hyde (1886).
Example: She’s a real Jekyll and Hyde. You never know when she will become unpleasant.

English Idioms: Like chalk and cheese

English Idioms About “Food”
Idiom: Like chalk and cheese
Meaning: (Also as chalk and cheese) When things or people are like chalk and cheese, they are different although they are superficially alike.
Example: His two sons are like chalk and cheese.