stay up stay tube • st. baeda · · · Info · Definitions · Synonyms · Characters · · stay up · · Text Common · · Latin · · Scripts 7 · · Length 2 · · Syllables Definitions · · · (verb) not go to bed. Synonyms: stay up, sit up. Examples: "Don't stay up so late--you have to go to work tomorrow." "We sat up all night to watch the election." · · Verb Definition 1 Synonyms · · · sit up · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079