"Pay back" is a commonly used phrasal verb, primarily appearing in informal speech, though it can also be used in formal contexts depending on the subject matter. It generally describes the action of returning money that one has borrowed, making it prevalent in discussions about financial transactions or informal agreements among friends or family. Additionally, "pay back" can also be used more metaphorically to refer to returning a favor or seeking revenge, thus appearing in varied contexts like personal relationships or narratives concerning justice. Its versatility makes it a crucial component of everyday language, facilitating clear communication about reciprocal actions, whether financial or personal. In more formal financial or legal contexts, terms like "repay" or "reimburse" may be preferred, yet "pay back" remarkably retains its relevance across a spectrum of conversational settings.
B1
PreIntermediate
1. To repay money that was borrowed.
I need to pay back the loan I took from the bank.
She promised to pay back the money she borrowed from her brother.
2. To retaliate or take revenge for a harmful act.
After being humiliated, he vowed to pay back his rival next time.
She never thought he would go to such lengths to pay back for a simple mistake.