mysterious

adj

1. cryptic, esoteric, arcane, occult, perdu, hermetic, hermetical; secret, veiled, hidden, masked, screened, disguised, top secret, Inf. hush-hush; obscure, indistinct, indefinite, unclear, shadowy, cloudy, nebulous, nubilous, nubiferous, vague; inscrutable, oracular, sphingine, sphinxian, sphinxlike; mystic, mystical, transcendental, cabalistic, supernatural, preternatural; undisclosable, unrevealable, irrevealable, undivulgeable, unspeakable, unutterable, ineffable, inviolable.

2. inexplicable, unexplainable, insolvable, insoluble, unaccountable, Obs. inextricable; puzzling, baffling, bewildering, confounding, perplexing, enigmatic, enigmatical, mystifying; strange, weird, bizarre.

3. impenetrable, unfathomable, unknowable, incomprehensible, uncomprehensible, incognizable, incog-noscible, undefinable, past or beyond comprehension or understanding; profound, deep, recondite, abstruse, abstract, heavy, Sl. heavy duty. 76

34. ambiguous, equivocal, discreet, noncommittal; reticent, taciturn, silent, mum, close-mouthed, tight-lipped, Inf. buttoned-up; evasive, shifty, circuitous; secretive; covert, clandestine, under-the-table, under-the-counter; furtive, surreptitious, insidious, underhanded; stealthy, skulking.