cryptic
adjective
[ ˈkrɪptɪk ]
• having a meaning that is mysterious or obscure.
• "he found his boss's utterances too cryptic"
Similar:
enigmatic,
mysterious,
hard to understand,
confusing,
mystifying,
perplexing,
puzzling,
obscure,
abstruse,
arcane,
oracular,
Delphic,
ambiguous,
elliptical,
oblique,
as clear as mud,
• (of coloration or markings) serving to camouflage an animal in its natural environment.
• "cryptic plumage is thought to minimize predation"
Origin:
early 17th century: from late Latin crypticus, from Greek kruptikos, from kruptos ‘hidden’. cryptic (sense 2) dates from the late 19th century.