ELUSIVE
elusive
(adjective) skillful at eluding capture; “a cabal of conspirators, each more elusive than the archterrorist”- David Kline
baffling, elusive, knotty, problematic, problematical, tough
(adjective) 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”
elusive
(adjective) difficult to describe; “a haunting elusive odor”
elusive, subtle
(adjective) 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”
Source: WordNet® 3.1
Etymology
Adjective
elusive (comparative more elusive, superlative most elusive)
Evading capture, comprehension or remembrance.
Difficult to make precise.
Rarely seen.
Source: Wiktionary
E*lu"sive, a.
Definition: Tending to elude; using arts or deception to escape; adroitly
escaping or evading; eluding the grasp; fallacious.
Elusive of the bridal day, she gives Fond hopes to all, and all with
hopes deceives. Pope.
– E*lu"sive*ly, adv.
– E*lu"sive*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition