From Longman Dictionary of Contemporary Englishat randomat randomCHANCE/BY CHANCEwithout any definite plan, aim, or patternchoose/select/pick something at random
The gang picked their victims at random. βrandomExamples from the Corpusat randomβ’ While he waited, he picked up a magazine, turned to a pageat random, and started reading.β’ We selected the agenciesat random from the phone book.β’ The forms were distributedat random to people passing by.β’ Twenty students were chosenat random to take part in the experiment.
