To rush is to move or act very quickly, often because there is little time. It can also mean to send or push something forward with great speed or pressure.
From Middle English *russhen*, probably from Old French *ruser* 'to charge' or a Germanic root meaning 'to move quickly or violently'. The sense of sudden, forceful movement has stayed central.
We say we feel 'a rush' of excitement or adrenaline, using a physical word for a mental storm. Rush hour, rush jobs, sugar rush—English treats time, work, and even chemicals as waves that crash into us. The word turns everyday life into a series of tiny stampedes.
Complete word intelligence in one call. Free tier — 50 lookups/day.