elusive
1. [ adjective ] difficult to describe
Examples:

"a haunting elusive odor"

Related terms: unidentifiable
2. [ adjective ] skillful at eluding capture
Synonyms: evasive
Examples:

"a cabal of conspirators, each more elusive than the archterrorist"- David Kline

Related terms: artful
3. [ adjective ] be difficult to detect or grasp by the mind
Synonyms: subtle
Examples:

"his whole attitude had undergone a subtle change" "a subtle difference" "that elusive thing the soul"

Related terms: impalpable
Similar spelling:   Elsberry
  Elisabeth