fast one fast of the firstborn • fast reactor · · · Info · Definitions · Synonyms · Characters · · fast one · · Text Common · · Latin · · Scripts 8 · · Length 2 · · Syllables Definitions · · · (noun) a cunning or deceitful action or device. Synonyms: trick, fast one. Examples: "He played a trick on me." "He pulled a fast one and got away with it." · · Noun Definition 1 Synonyms · · · trick · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074