indefatigably
/ˌɪndɪˈfætɪɡəbli/
adverb
- In a way that shows tireless persistence or never giving up.
- The scientist indefatigably pursued a cure for the disease for over twenty years.
- She worked indefatigably to raise money for the local animal shelter.
- He indefatigably practiced the piano every day until he mastered the piece.
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