guestimate guesthouse • guesting · · · Info · Definitions · Synonyms · Characters · · guestimate · · Text Latin · · Script 10 · · Length 4 · · Syllables Definitions · · · (noun) an estimate that combines reasoning with guessing. Synonyms: guesstimate. · · Noun Definition 1 Synonyms · · · guesstimate · · Synonym 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 m latin small letter m U+006D s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075