Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Adjective
S: (adj) abstruse, deep, recondite (difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge) "the professor's lectures were so abstruse that students tended to avoid them"; "a deep metaphysical theory"; "some recondite problem in historiography"