beyond one's grasp

baffling impenetrable inconceivable mystifying opaque puzzling unfathomable unimaginable unintelligible

Delphic beats me beyond comprehension clear as mud cryptic enigmatic fathomless incognizable inscrutable mysterious obscure over one's head perplexing sibylline unclear ungraspable unknowable

believable clear comprehensible fathomable imaginable intelligible understandable

Delphic baffling beats me beyond comprehension clear as mud cryptic enigmatic fathomless impenetrable incognizable inconceivable inscrutable mysterious mystifying obscure opaque over one's head perplexing puzzling sibylline unclear unfathomable ungraspable unimaginable unintelligible unknowable