“+ adjective
Etymology: un- (I) + tiring, present participle of tire
: incapable of tiring : indefatigable , unwearying
to the end of his life he was an untiring worker — A.C.McGiffert
• un·tir·ing·ly adverb
“+ adjective
Etymology: un- (I) + tiring, present participle of tire
: incapable of tiring : indefatigable , unwearying
to the end of his life he was an untiring worker — A.C.McGiffert
• un·tir·ing·ly adverb
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012