past participle of undergo

A current of water which flows under the surface, and often in a different direction from surface currents. / (figuratively) A tendency of feeling or opinion that is concealed rather than exposed.

(transitive, also figuratively) To flow under some surface.

Situated under one's foot or feet. / In the way; placed so as to obstruct or hinder. / Downtrodden; abject.

Under one's foot or feet. / In the way; situated so as to obstruct or hinder.

A storage compartment that sits below the deck of a boat.

(transitive) To provide a footing beneath; to shore up or underpin. / (accounting) To assign a column summary that is less than the sum of all the entries in that column.

(historical) The Pre-American Civil War anti-slavery resistance movement dedicated to assisting escaped slaves in reaching safe territory.

Any garment worn underneath others, especially one worn next to the skin; an item of underwear.

The armpit. / (cricket) Old-fashioned and now outlawed style of bowling in which the arm is not swung over the shoulder.