tire·less 
(tīrlĭs)
(tīrlĭs)adj.
Having or showing a capacity for persistent effort; not tiring or relenting: a tireless advocate; tireless efforts.
tireless·ly adv.
tireless·ness n.
Synonyms: tireless, indefatigable, unflagging, untiring, unwearied, weariless
These adjectives mean having or showing a capacity for persistent or prolonged effort: a tireless worker; an indefatigable advocate of human rights; unflagging pursuit of excellence; untiring energy; an unwearied researcher; a weariless defender of freedom of the press.
These adjectives mean having or showing a capacity for persistent or prolonged effort: a tireless worker; an indefatigable advocate of human rights; unflagging pursuit of excellence; untiring energy; an unwearied researcher; a weariless defender of freedom of the press.
- Indo-European root: oktō(u)
- Indo-European root: okw-
- Indo-European root: op-
- Indo-European root: or-
- Indo-European root: orbh-
- Indo-European root: ors-
- Indo-European root: ost-
- Indo-European root: ous-
- Indo-European root: owi-
- Indo-European root: pag-
- Indo-European root: pan-
- Indo-European root: pant-
- Indo-European root: papa
- Indo-European root: past-
- Indo-European root: pau-
- Indo-European root: pau-
- Indo-European root: paəwr̥
- Indo-European root: ped-
- Indo-European root: peig-
- Indo-European root: peiə-
- Indo-European root: peku-
- Indo-European root: pekw-
- Indo-European root: pel-
- Indo-European root: pel-
- Indo-European root: pel-