Synonyms of inertia

inertia

noun

i-ˈnər-shə 

as in laziness

an inclination not to do work or engage in activities

the inertia that grips so many of the club's members is the reason why nothing ever gets done

Synonyms & Similar Words

• laziness
• idleness
• indolence
• sloth
• shiftlessness
• loafing
• lethargy
• apathy
• sluggishness
• lassitude
• supineness
• languor
• lounging
• listlessness
• lolling
• dallying
• goldbricking

Antonyms & Near Antonyms

• industry
• drive
• initiative
• industriousness
• ambition
• enterprise
• hustle
• energy
• perseverance
• diligence
• go
• vigor
• vitality
• exuberance
• assiduity
• animation
• robustness
• vivacity
• liveliness
• pep
• sprightliness
• briskness
• vibrancy
• assiduousness
• vim
• lustiness
• peppiness
• jazziness

Example Sentences

Recent Examples of inertia

This political inertia likely stems from the fact that the two most important levers for reducing the debt—raising taxes and cutting spending—remain unpopular among lawmakers and voters alike. — Will Gottsegen, The Atlantic, 26 Aug. 2026

The air temperature did not change much, probably due to the thermal inertia of the surrounding water. — Joe Rao, Space.com, 20 Aug. 2026

Michael Hannan and John Freeman argued that the very features organizations build for reliability and accountability can generate structural inertia when conditions change. — Byleonie H. Mattison, Forbes.com, 18 Aug. 2026

The research above showed that distribution of sleep stages and the stage prior to waking, not duration, can impact the possibility of sleep inertia. — Alexandra Frost, USA Today, 17 Aug. 2026