ad. In an accidental manner; unexpectedly; by chance; casually; fortuitously.
ad. Unintentionally.
the GNU version of the Collaborative International Dictionary of English
ad. In an accidental manner; unexpectedly; by chance; unintentionally; casually; fortuitously; not essentially.
The Century Dictionary and Cyclopedia
In an accidental manner; by chance; casually; fortuitously; not essentially or intrinsically.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. without intention; in an unintentional manner
ad. of a minor or subordinate nature
ad. without advance planning
Word Usage
"The sitting-room has its solitary moments, when any two boarders who wish to meet may come together accidentally, (_accidentally_, I said, Madam, and"