What is the origin of the idiom "on second thought" and when to use it?

The idiom "on second thought" originated in the English language, but its specific origin is difficult to trace. It is a common expression used to convey the idea of reconsidering or revising one's initial thoughts or opinions. The phrase likely emerged from the natural tendency of individuals to reflect and reevaluate their perspectives after having some time to think or gather additional information. It is commonly used when someone reevaluates their initial thoughts, judgments, or decisions after further reflection or consideration.

What is the origin of the idiom "have second thoughts" and when to use it?

The idiom "have second thoughts" originates from the idea of reconsidering a decision or action before proceeding. It is used to suggest taking a moment to reflect or entertain doubts about one's initial choice, often due to uncertainty or a realization.