tireless
WordReference English Thesaurus © 2025
Synonyms:
unwearying, untiring, indefatigable, unflagging, incessant, hard-working Collocations, energetic Collocations, resolute, steadfast Collocations, persevering, enthusiastic Collocations, never-tiring, tenacious, unabating, unswerving
Antonyms:
tired Collocations, weak Collocations, feeble Collocations, listless, exhausted Collocations, worn-out, beat Collocations, burned-out, inert, languid, bushed, pooped , sluggish Collocations, knackered , have nothing left in the tank