random · adjective /ˈræn.dəm/
random
C1 happening, done or chosen by chance rather than according to a plan
Dictionary examples:
random checks/tests/attacks
We asked a random sample/selection of people what they thought.
Learner example:
I will put my remarks in random order. (Certificate in Advanced English; C1; Dutch)
at random
C1 chosen by chance
Dictionary example:
Winners will be chosen at random.
Learner example:
The rooms suggested to be [filmed] have not been chosen at random. (Certificate in Advanced English; C1; Polish)
