Prevent

Webster's Dictionary of the English Language

·vi To come before the usual time.

II. Prevent ·vt To be beforehand with; to Anticipate.

III. Prevent ·vt To go before; to Precede; hence, to go before as a guide; to Direct.

IV. Prevent ·vt To Intercept; to Hinder; to Frustrate; to Stop; to Thwart.