indefatigable

Day 52Level 2

in-di-FAT-i-guh-bul

tireless

not easily exhaustible

Part of Speech: adjective

Synonyms:

assiduous, industrious, vigorous

Antonyms:

tired, weary

Example Sentence:

We loved him for his indefatigable, pioneering spirit - the first man to climb Mount Everest.