| underneath |
below or beneath, esp. directly under. [7 definitions] |
| under no circumstances |
in no instance; never. |
| under one's thumb |
controlled or heavily influenced by someone. |
| under one's wing |
under one's care or protection. |
| underpants |
pants worn under other clothing, usu. as underwear. |
| underpass |
a passage or roadway that goes beneath a street, track, overpass, or the like. |
| undersea |
pertaining to, located, carried on, or intended for use beneath the surface of the sea; underwater. [2 definitions] |
| undershirt |
a collarless and often sleeveless undergarment worn next to the skin on the upper body. |
| underside |
the under or lower side or surface; bottom. |
| understand |
to perceive the meaning, nature, or significance of. [9 definitions] |
| understanding |
the intellectual process of getting the meaning of something; comprehension. [9 definitions] |
| understood |
past tense and past participle of understand. [3 definitions] |
| undertake |
to take on (a task, project, challenge or the like); decide or start to do. [2 definitions] |
| undertaker |
one who undertakes something. [2 definitions] |
| under the circumstances |
given the facts as they are. |
| under the sun |
in existence; in the world; on earth. |
| under the weather |
(informal) somewhat ill or in low spirits. |
| undertow |
a strong current or backwash of water moving in the opposite direction from the water on the surface, as beneath waves breaking on a shore. |
| underwater |
located, occurring, done, or intended for use below the surface of a body of water. [2 definitions] |
| underwear |
a garment or garments worn next to the skin under other clothing; underclothes. |
| underweight |
a condition of lacking sufficient or normal weight. [2 definitions] |