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Indefatigable
adjective
/ˌɪndɪfəˈtiɡəbəl/
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Word Frequency:
0.8
Definitions
1.
adjective
Extremely persistent and untiring.
Synonyms
inexhaustible
relentless
tireless
unflagging
unsinkable
untiring
unwearying
energetic
infatigable
unfailing
unswerving
unwavering
Antonyms
defatigable
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