random

Definitions

Made, done, or happening without method or conscious decision.

Governed by or involving equal chances for each of the actual or potential outcomes.

Lacking a definite plan, purpose, or pattern.

Examples

I picked a random book from the shelf to read.

The computer generated a random sequence of numbers.

We had a random conversation about space travel while waiting for the bus.

Synonyms

arbitrary haphazard aimless unsystematic chance indiscriminate unplanned

Antonyms

systematic planned methodical deliberate ordered intentional purposeful