What is the meaning of the word "at random"?

Definitions:

  1. in a random manner copy to clipboard adverb
    • At random, he picked a book from the shelf and began to read. copy to clipboard
  2. in a random manner copy to clipboard adverb
    • * During the game, the players were chosen at random to participate in a bonus challenge. copy to clipboard
  3. in a random manner copy to clipboard adverb
    • * The scientist selected a group of participants at random to take part in the study. copy to clipboard
  4. in a random manner copy to clipboard adverb
    • * The teacher called on students at random to answer questions during the lesson. copy to clipboard
  5. in a random manner copy to clipboard adverb
    • * The lottery numbers are drawn at random each week. copy to clipboard
  6. in a random manner copy to clipboard adverb
    • * The doctor chose a medication at random to prescribe for the patient's symptoms. copy to clipboard

Synonyms: