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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 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

The ground contains a layer known as the "active layer," which freezes and thaws each year.

From Science Daily • Apr. 4, 2026

The Military Service Modernisation Act sets out plans to expand the number of active personnel from around 180,000 to 260,000 by 2035.

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

Every word of these busy, active spirit lives was told to the Taylors through the mediumship, mind, and body of Kate Fox.

From "American Spirits" by Barb Rosenstock

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