indefatigably.

With effort or energy that seems never to tire.

Use it for

Words that belong together

• campaign indefatigably
• work indefatigably

On the page

She campaigned indefatigably for the library's reopening.

Usage notes

Primary category: literary / elevated general. Forms: Invariable adverb. 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. Writing functions: character, description. Commonness: moderately common.