all clear all but • all comers · · · Info · Definitions · Characters · · all clear · · Text Common · · Latin · · Scripts 9 · · Length 2 · · Syllables Definitions · · · (noun) a signal (usually a siren) that danger is over. Synonyms: all clear. · · Noun Definition 1 (noun) permission to proceed because obstacles have been removed. Synonyms: all clear. · · Noun Definition 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 l latin small letter l U+006C r latin small letter r U+0072