Lest

Webster's Dictionary of the English Language

·adj Last; least.

II. Lest ·noun Lust; desire; pleasure.

III. Lest ·vi To Listen.

IV. Lest ·adj For fear that; that ... not; in order that ... not.

V. Lest ·adj That (without the negative particle);

— after certain expressions denoting fear or apprehension.