English Reference
Noun

inactivity

n. uncountable
B2 Upper Intermediate US /ˌɪnækˈtɪvɪti/ UK /ɪnæktˈɪvɪti/ in·ac·tiv·i·ty UK spelling inactivities

n.a state of not doing anything or not being active. You use this to describe people who are not moving or machines that are not working.

n.the state of being inactive or the lack of physical or functional movement. Often carries a negative connotation when referring to health or economic stagnation.


SIMPLE

Long periods of inactivity can be bad for your health.

CONTEXTUAL

The bank closed the account after two years of inactivity to prevent potential fraud.

COMPLEX

Medical professionals warn that sedentary lifestyles and prolonged physical inactivity significantly increase the risk of chronic cardiovascular diseases and metabolic disorders.

Usage

Frequently paired with the preposition 'of' or used as a subject in medical and technical contexts.

This type of fat buildup can be encouraged by high-fat diets, physical inactivity, and aging.

ScienceDaily· 5 Sept 2026

From in- + activity.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B2 · Upper Intermediate
Frequency Occasional
Updated