from
The Collaborative International Dictionary of English v.0.48
Advantage \Ad*van"tage\, v. t. [imp. & p. p. {Advantaged}; p.
pr. & vb. n. {Advantaging}.] [F. avantager, fr. avantage. See
{Advance}.]
To give an advantage to; to further; to promote; to benefit;
to profit.
[1913 Webster]
The truth is, the archbishop's own stiffness and
averseness to comply with the court designs, advantaged
his adversaries against him. --Fuller.
[1913 Webster]
What is a man advantaged, if he gain the whole world,
and lose himself, or be cast away? --Luke ix. 25.
[1913 Webster]
{To advantage one's self of}, to avail one's self of. [Obs.]
[1913 Webster]