Synonyms of random in English:

random


See US English definition of random

See UK English definition of random

adjective

1‘random spot checks’

SYNONYMS
unsystematic, arbitrary, unmethodical, haphazard, unarranged, unplanned, undirected, casual, indiscriminate, non-specific, stray, erratic
chance, accidental, hit-and-miss
serendipitous, fortuitous, contingent, adventitious
non-linear, entropic, fractal
rare aleatory, stochastic
ANTONYMS

systematic, planned


Phrases

    at random

    ‘five schools were chosen at random’


    SYNONYMS
    unsystematically, arbitrarily, randomly, without prearrangement, without method, unmethodically, haphazardly, without conscious choice, leaving things to chance
    out of a hat, by lot
    ANTONYMS

    systematically