Incidentally

Adverb

 * 1)  In an incidental manner; not of central or critical importance.
 * The book discussed the subject, but only incidentally.
 * 1) By chance; in an unplanned way.
 * 2)  Parenthetically, by the way.
 * Incidentally, did you hear anything new from your brother yesterday?

Thesaurus
a propos, accidentally, apropos, apropos of, as it chanced, by a fluke, by accident, by chance, by good fortune, by hazard, by the by, by the way, casually, en passant, for example, for some reason, fortuitously, in passing, in some way, par exemple, parenthetically, perchance, somehow, somehow or other, speaking of, unpredictably

Translations

 * Arabic: على فكرة
 * Armenian:
 * French:
 * German: apropos, nebenbei
 * Italian:


 * Romanian:
 * Russian:
 * Scottish Gaelic:
 * Swedish: apropå
 * Turkish: sırası gelmişken, bu arada, bir ara, laf arasında


 * Dutch: toevalligerwijze