indefatigable
3 synonyms and 2 antonyms for indefatigable, grouped by meaning and by how common each one is.
Adj — Never getting tired, however long or hard the effort.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
Etymology
Came into English via Middle French, from Latin indēfatīgābilis (“untiring”), from in- (“not”) + dēfatīgō (“to tire out”).
Full origin of indefatigable →