Definify.com

Webster 1913 Edition

adv.

In a idle manner; ineffectually; vainly; lazily; carelessly; (

Obs.

) foolishly.

adv.

In an idle manner; without employment.

Lazily; sluggishly.

Foolishly; uselessly; in a trifling way.

A shilling spent idly by a fool, may be saved by a wiser person.

Carelessly; without attention.

Vainly; ineffectually; as, to reason idly against truth.

idly ‎(comparative more idly, superlative most idly)

In an idle manner.
Without specific purpose, intent or effort.
I idly played with the paper, not even realizing I was folding it into a paper airplane.