surmisal surmisable • surmisant · · · Info · Definitions · Synonyms · Characters · · surmisal · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a message expressing an opinion based on incomplete evidence. Synonyms: guess, conjecture, supposition, surmise, speculation, hypothesis. · · Noun Definition 1 Synonyms · · · guess · · Synonym 1 conjecture · · Synonym 2 supposition · · Synonym 3 surmise · · Synonym 4 speculation · · Synonym 5 hypothesis · · Synonym 6 Characters · · a latin small letter a U+0061 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075