speedup speed truck • speed up · · · Info · Definitions · Synonyms · Characters · · speedup · · Text Latin · · Script 7 · · Length 2 · · Syllables Definitions · · · (noun) the act of accelerating; increasing the speed. Synonyms: acceleration, quickening. · · Noun Definition 1 Synonyms · · · acceleration · · Synonym 1 quickening · · Synonym 2 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 p latin small letter p U+0070 s latin small letter s U+0073 u latin small letter u U+0075