at random

by chance, in a haphazard manner

Adverb
1. in a random manner; "the houses were randomly scattered"; "bullets were fired into the crowd at random"
(synonym) randomly, indiscriminately, haphazardly, willy-nilly, arbitrarily, every which way

Synonyms and related words:
aimlessly, any which way, anyhow, anywise, around, at haphazard, at hazard, at intervals, at irregular intervals, brokenly, by catches, by chance, by fits, by jerks, by snatches, capriciously, carelessly, casually, desultorily, disconnectedly, discontinuously, dysteleologically, eccentrically, erratically, fitfully, haltingly, haphazard, haphazardly, helter-skelter, hit or miss, in snatches, in spots, inconstantly, indiscriminately, inexplicably, intermittently, irregularly, jerkily, lurchingly, nonuniformly, off and on, patchily, promiscuously, purposelessly, random, randomly, roughly, sloppily, spasmodically, sporadically, spottily, stochastically, unaccountably, uncertainly, unevenly, unmethodically, unpredictably, unrhythmically, unsteadily, unsystematically, variably, whimsically, wobblingly,
  

A CASACCIO. ALLA CIECA. ALLA RINFUSA

idm. แบบสุ่ม, โดยสุ่มขึ้นมา