"hard to grasp or confine," 1719, from Latin elus-, past-participle stem of eludere "elude, frustrate" (see elude) + -ive. Related: Elusiveness.
a haunting elusive odor
that elusive thing the soul
elsewise
elucidate
elucidation
elude
elusion
elusive
elution
elven
elver
Elvira
elvish