The Spanish word 'salida' (meaning 'exit') comes from the verb 'salir' ('to exit') combined with the feminine past participle suffix '-ida'. The verb 'salir' itself derives from the Latin word 'salire', which meant 'to jump' or 'to leap'. Over time, the meaning evolved from the physical action of jumping to the more general concept of leaving or exiting a place.

The most common related Spanish word is the verb 'salir' (to exit, to leave), which you'll encounter frequently in phrases like 'salir de casa' (to leave home) or '¿A qué hora sales?' (What time are you leaving?). Another common related word is 'saliente' (protruding, outgoing), which maintains the idea of something coming out or extending outward.

While English 'sally' (as in 'to sally forth' meaning to venture out) comes from the same Latin root 'salire', it's not commonly used in modern English. However, the word 'salient' (meaning prominent or protruding) is a more familiar English relative, which preserves the original notion of 'jumping out' or 'leaping forward' from the Latin 'salire'.