alarm clock alarm bird • alarm gauge · · · Info · Definitions · Synonyms · Characters · · alarm clock · · Text Common · · Latin · · Scripts 11 · · Length Definitions · · · (noun) a clock that wakes a sleeper at some preset time. Synonyms: alarm. · · Noun Definition 1 Synonyms · · · alarm · · Synonym 1 dismay · · Synonym 2 consternation · · Synonym 3 warning device · · Synonym 4 alarm system · · Synonym 5 alert · · Synonym 6 warning signal · · Synonym 7 alarum · · Synonym 8 appal · · Synonym 9 appall · · Synonym 10 horrify · · Synonym 11 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 k latin small letter k U+006B l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072