Index of English words, starting with "un"

(1) - Underwear (n.) That which is worn under the outside clothing; underclothes.

(1) - Underwing (n.) Any one of numerous species of noctuid moths belonging to Catocala and allied genera, in which the hind wings are banded with red and black or other conspicuous colors. Many of the species are called red underwing.
(2) - Underwing (n.) One of the posterior wings of an insect.

(1) - Underwood (n.) Small trees and bushes that grow among large trees; coppice; underbrush; -- formerly used in the plural.