crasher crash • crasis · · · Info · Definitions · Synonyms · Characters · · crasher · · Text Latin · · Script 7 · · Length Definitions · · · (noun) someone who gets in (to a party) without an invitation or without paying. Synonyms: gatecrasher, unwelcome guest. · · Noun Definition 1 Synonyms · · · gatecrasher · · Synonym 1 unwelcome guest · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 r latin small letter r U+0072 s latin small letter s U+0073