Definition of "at random" []

• In a random manner (adverb)
• Haphazardly (adverb)

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• "When all ten lectures have been copied and memorized, we will take an exam: each of us will stand in the front of a bus filled with the rest of our group and recite a part of the tour chosen at random by Maria Mikhailovna."
• "So, when we reached the lunch hour in Bellagio, we picked one of the scaline at random and climbed to the top."
• "The dormitory was a barnlike building, long and narrow, thrown together more or less at random after Clancey's ship had sailed away for New England to fetch the brides."