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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.

Together, these discoveries paint a picture of Mars as an active and evolving world.

From Science Daily • Apr. 5, 2026

The plan has been met with scepticism by a number of politicians in California, with questions raised about the final cost of the project and the challenges of running Alcatraz as an active prison.

From BBC • Apr. 4, 2026

We give more value to products and experiences that require us to work and to give active participation.

From Slate • Apr. 4, 2026

The active ingredients in the drugs would be manufactured at an FDA-registered facility subject to inspection, and compounders are overseen by state boards of pharmacies to ensure sterile conditions.

From Salon • Apr. 4, 2026

We all watched Fred carry the active lobster over to the silverware drawer, like it was as lifeless as an eggplant.

From "The Line Tender" by Kate Allen

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