| 5000 Vocabulary List for Visiting Scholars in the USA - Page 619 | |||
| Word | Type | Used in a Sentence | Synonym |
| uncommon | adj. | It is uncommon food for here. | unusual |
| unconscious | adj. | I was unconscious for 14 minutes. | comatose |
| adj. | It was an unconscious reaction. | automatic | |
| under | prep. | There is a name under the painting. | lower position |
| prep. | It was under the table. | beneath surface | |
| prep. | It costs under five dollars. | less than | |
| prep. | Under those conditions I can't go. | because of | |
| prep. | We were under contract. | obligation of | |
| underestimate | verb | They underestimated the costs. | miscalculated |
| undergo | verb | She will undergo a second operation. | endure |
| undergraduate | noun | We were then undergraduates. | no degree yet |
| underground | adj. | There was an underground shelter. | below surface |
| noun | We rode the underground in London. | subway | |