brain-teaser brain-strong • brain-tire · · · Info · Definitions · Synonyms · Characters · · brain-teaser · · Text Common · · Latin · · Scripts 12 · · Length 3 · · Syllables Definitions · · · (noun) a difficult problem. Synonyms: riddle, conundrum, enigma. · · Noun Definition 1 Synonyms · · · riddle · · Synonym 1 conundrum · · Synonym 2 enigma · · Synonym 3 Characters · · - hyphen-minus U+002D a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074