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

To combat inertia, the team installs the Alluminox platform in hospitals free of charge, and charge them only a minimal fee per use. — Angelica Ang, Fortune, 26 Oct. 2026

The researchers also focused on reducing the robot’s effective inertia, a property that describes how strongly an object resists changes in its motion. — Kaif Shaikh, Interesting Engineering, 10 Oct. 2026

Beijing will likely suffer from a lengthy period of political inertia under Xi, coupled with a hollowing out of bureaucratic capacity—and then see a succession crisis in the 2030s or 2040s. — Carl Minzner, Foreign Affairs, 5 Oct. 2026

The Stanford researchers estimated that sellers can roughly double revenue because of consumer inertia, when people forget or put off canceling, and cancellation friction, when ending a subscription takes too much time or effort. — Barbara Booth, CNBC, 27 Sep. 2026