indefatigably

0 antonyms and opposites of indefatigably, grouped by meaning.

Adv — In an extremely persistent and untiring manner; in an indefatigable manner

We haven't recorded synonyms for indefatigably yet. You can still read its full definition, where it comes from, or words that rhyme with it.

Etymology

From indefatigable + -ly, but indefatigable itself was attested later. In use since the 16th century.