Synonyms of incidental in English:

incidental


See US English definition of incidental

See UK English definition of incidental

See Spanish definition of secundario

adjective

1‘incidental details’

SYNONYMS
less important, of less importance, secondary, subsidiary, subordinate, ancillary, auxiliary
minor, peripheral, background, by-the-way, by-the-by, non-essential, inessential, unimportant, insignificant, inconsequential, unnecessary, trivial, trifling, negligible, petty, tangential, extrinsic, extraneous, dispensable, expendable
ANTONYMS

crucial, essential

2‘the implications of this incidental discovery’

SYNONYMS
chance, by chance, accidental, by accident, random, casual, fortuitous, serendipitous, adventitious, coincidental, unlooked-for
rare fluky
rare aleatory
ANTONYMS

deliberate

3‘the risks necessarily incidental to a fireman's job’

SYNONYMS
connected with, related to, associated with, accompanying, attending, attendant on, concomitant to

noun

1incidentals‘an allowance to cover meals, taxis, and other incidentals’

SYNONYMS
extras, contingencies, odds and ends
expenses