Hang on Definition 1 of 5Pro Tip 1/3Impatience Context Often used when someone is in a rush but needs the other person to wait briefly. Hang on, I just need to send this text! Pro Tip 2/3Casual Conversation Mostly used in informal settings among friends, family or casual acquaintances. Can you hang on a sec while I tie my shoelaces? Pro Tip 3/3Phone Usage Commonly used to ask someone to wait on a telephone line. Hang on, I'll check if she's available.