Definition of defatigable in English:

defatigable

adjective

  • Easily tired or fatigued; capable of becoming wearied or fatigued; (in later use often) specifically (chiefly humorous) not indefatigable, not tirelessly persistent.

Origin

Mid 17th century (in an earlier sense). From post-classical Latin defatigabilis from classical Latin dē- + fatīgāre + -bilis.

Pronunciation

defatigable

/dɪˈfatɪɡəbl/