tireless
adjEtymology From tire + -less.
1
US Without a tire (wheel covering); tyreless.
adj — 2 senses
Etymology From tire (“to become sleepy or weary”) + -less.
Indefatigable, untiring and not yielding to fatigue
Etymology From tire + -less.
US Without a tire (wheel covering); tyreless.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.