INCIDENTALLY

incidentally, accidentally

(adverb) of a minor or subordinate nature; “these magnificent achievements were only incidentally influenced by Oriental models”

Source: WordNet® 3.1

Etymology

Adverb

incidentally (comparative more incidentally, superlative most incidentally)

(manner) In an incidental manner; not of central or critical importance.

By chance; in an unplanned way.

(speech act, conjunctive) Parenthetically, by the way.

Synonyms

(parenthetically): apropos, as a matter of fact, by the way

Antonyms

• (in an incidental manner): inevitably, certainly

Source: Wiktionary

INCIDENTAL

In`ci*den"tal, a.

Definition: Happening, as an occasional event, without regularity; coming without design; casual; accidental; hence, not of prime concern; subordinate; collateral; as, an incidental conversation; an incidental occurrence; incidental expenses. By some, religious duties . . . appear to be regarded . . . as an incidental business. Rogers.

Syn.

– Accidental; casual; fortuitous; contingent; chance; collateral. See Accidental.

– In`cen*den"tal*ly, adv.

– In`cen*den"tal*ness, n. I treat either or incidentally of colors. Boyle.

In`ci*den"tal, n.

Definition: An incident; that which is incidental; esp., in the plural, an aggregate of subordinate or incidental items not particularized; as, the expense of tuition and incidentals. Pope.

Source: Webster’s Unabridged Dictionary 1913 Edition