indefatigable

Advancedzipf 2.55

Pronunciation

/ˌɪndɪˈfætɪɡəbl/(in-dih-FAT-ig-uh-bl)

Part of speech

adjectiveformal

Chinese

不知疲倦的；不屈不挠的

Definition

Persisting tirelessly; showing sustained enthusiasm and energy.

Word family

  • indefatigably/ˌɪndɪˈfætɪɡəbli/(adv)不知疲倦地

Collocations

  • indefatigable spirit
  • indefatigable worker
  • indefatigable efforts
  • indefatigable energy

Examples

  1. 1.Her indefatigable efforts to raise funds saved the charity. (tireless)
  2. 2.He's an indefatigable campaigner who never gives up. (relentless energy)

Synonyms

  • tireless/ˈtaɪələs/— never getting tired
  • relentless/rɪˈlɛntləs/— never stopping
  • untiring/ʌnˈtaɪərɪŋ/— showing no fatigue

Etymology

in- (not) + defatigare (to tire out) — cannot be fatigued