俱备 is an adjective meaning 'fully prepared' or 'all necessary elements present.' It combines 俱 (jù), meaning 'all' or 'entirely,' and 备 (bèi), meaning 'prepared' or 'equipped.' Together, they convey completeness in readiness — not just partially ready, but thoroughly equipped with every required component. The word carries a formal, slightly literary tone and is often used in written Chinese, official announcements, or careful speech.

This term emphasizes comprehensiveness: it’s not enough to have most things — all essential conditions, tools, qualifications, or resources must be in place. It’s commonly found in contexts like project planning, legal requirements, academic prerequisites, or safety protocols where nothing critical can be missing. While grammatically similar to verbs in some constructions, 俱备 functions adjectivally and typically follows the subject or appears after 是 or 已经 to describe a state of full readiness.