n. 逃避的(难以捉摸的,容易被忘记的)

[ noun ]
the quality of being difficult to grasp or pin down
<noun.attribute>
the author's elusiveness may at times be construed as evasiveness

Elusive \E*lu"sive\, a.
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.