Meaning

adjective occurring or encountered or experienced or observed frequently or in accordance with regular practice or procedure

adjective commonly encountered

originFrom Middle English usual, from Old French usuel, from Latin ūsuālis (“for use, fit for use, also of common use, customary, common, ordinary, usual”), from ūsus (“use, habit, custom”), from the past participle stem of ūtī (“to use”), possibly ultimately from Proto-Indo-European *h₃eyt- (“to take along, fetch”). Displaced native Old English ġewunelīċ.

Etymology from Wiktionary, CC BY-SA 3.0