Of a person: Displaying genius or brilliance; inventive. / Of a thing: characterized by genius; cleverly contrived or done. / Showing originality or sagacity; witty.

In an ingenious manner; using ingenuity.

The condition of being ingenious.

plural of ingeniousness

Obsolete form of ingeny.

(obsolete) To invent; to contrive.

(obsolete) natural gift or talent; ability; wit; ingenuity

Third-person singular simple present indicative form of ingeniate