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Definitions

random

[ran-duhm] / ˈræn dəm /
ADJECTIVE
haphazard, chance
Synonyms
STRONGEST
accidental aimless arbitrary incidental indiscriminate irregular odd unplanned
WEAK
adventitious by-the-way casual contingent designless desultory driftless fluky fortuitous hit-or-miss objectless promiscuous purposeless slapdash spot stray unaimed unconsidered unpremeditated
Antonyms
STRONGEST
essential methodical planned systematic
WEAK
definite particular specific

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A private key is a very large, random, secret number that allows you to manage and access your funds.

From Barron's • Apr. 1, 2026

The exact detection time is random, and information is encoded in the phase relationship between these light pulses.

From Science Daily • Apr. 1, 2026

TikTok creator Marcelo Wang, who teaches viewers how to say popular phrases and slang in Mandarin, alerted many to the "super random" trend in a post on Friday.

From BBC • Mar. 30, 2026

But often, they’re sources like Tripadvisor, Amazon reviews, or even random posts on niche subreddits.

From Slate • Mar. 28, 2026

We’d leave each other notes and scavenger hunt clues and other random stuff.

From "Keeping Pace" by Laurie Morrison

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.