RANDOMNESS
at random
without sequence or order.Sally picked four names at random from the telephone book.The gunman walked into the crowded restaurant and fired at random.Jane will read almost anything. She selects four novels at random at the library each week and reads them all.
by chance
by accident; without cause; randomly.The contestants were chosen by chance.We met only by chance, and now we are the closest of friends.
shot in the dark
a random or wild guess or try. (Slang.)I don’t know how I guessed the right answer. It was just a shot in the dark.I was lucky to hire such a good worker as Sally. When I hired her, it was just a shot in the dark.
without rhyme or reason
without purpose, order, or reason. (See variations in the examples. Fixed order.)The teacher said my report was disorganized. My paragraphs seemed to be without rhyme or reason.Everything you do seems to be without rhyme or reason.This procedure is without rhyme or reason.