lethargy.

A persistent sense of sluggishness or reduced energy and alertness.

Use it for

Words that belong together

• summer lethargy
• overcome lethargy

On the page

A heavy lethargy settled over the camp after lunch.

Usage notes

Primary category: literary / elevated general. Forms: Usually uncountable; no ordinary plural in this sense. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.