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Definitions

active

[ak-tiv] / ˈæk tɪv /
ADJECTIVE
having movement
Synonyms
STRONGEST
alive effective operating
STRONG
flowing functioning going mobile movable operative progressive pushing rapid rolling running rushing rustling shifting simmering speeding streaming traveling turning walking working
WEAK
astir at work bustling efficacious exertive hasty impelling in force in play in process moving restless speedy swarming
Antonyms
STRONG
fixed inoperative unmovable unworking
WEAK
abeyant disinterested dormant idle immobile inactive indifferent inert lazy quiescent quiet sluggish
ADJECTIVE
very involved in activity
Synonyms
STRONGEST
aggressive alive bold busy determined diligent dynamic eager energetic engaged enthusiastic forceful intense keen lively quick ready resolute
STRONG
alert daring fireball jumping pushing rapid sharp whiz
WEAK
agile animated assiduous brisk bustling chipper dashing dexterous enlivened enterprising eventful forcible fresh frisky hard-working high-spirited hyper industrious inventive nimble on the move perky persevering purposeful sprightly spry zealous
Antonyms
STRONGEST
afraid apathetic calm cowardly disinterested dispirited dull idle ignorant inactive indifferent irresolute lazy lethargic lifeless meek quiet slow sluggish stupid uneducated unenthusiastic weak
WEAK
abeyant dormant immobile inert quiescent

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.

The investment giant Andreessen Horowitz tried to build out its own media arm, called Future, a few years ago, though it isn’t currently active.

From The Wall Street Journal • Apr. 3, 2026

Overall, passive indexed mutual funds and ETFs received $232.9 billion in new money, and active funds only $97.6 billion.

From Barron's • Apr. 3, 2026

Out of the 25 lasers, 21 were active during testing.

From Science Daily • Apr. 2, 2026

OpenAI said Tuesday that it is now generating $2 billion in monthly revenue and that it expects to soon reach one billion weekly active users.

From Barron's • Apr. 1, 2026

In his hand was proof that the Soviet Union had active spies here in the United States.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin

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