noun |
adj |
verb |
adv |
(adj) tough, baffling, problematic, problematical, knotty
making great mental demands; hard to comprehend or solve or believe
a baffling problem; I faced the knotty problem of what to have for breakfast; a problematic situation at home
(adj) subtle
difficult to detect or grasp by the mind or analyze
his whole attitude had undergone a subtle change; a subtle difference; that elusive thing the soul