Synonyms of adventitious in English:

adventitious


See definition of adventitious

adjective

1‘he felt that the conversation was not entirely adventitious’

SYNONYMS

unplanned, unpremeditated, accidental, unintentional, unintended, unexpected, unforeseen, involuntary, chance, fortuitous, serendipitous, coincidental, casual, random, fluky, unlooked-for, unhoped-for, not bargained for, out of the blue, without warning

rare aleatory

ANTONYMS

planned

2‘some rural parishes recorded high adventitious populations’

SYNONYMS

foreign, alien, non-native, outside, external, extraneous, extrinsic

ANTONYMS

native, indigenous