tirelessness en · NOUN
Etymology
Etymology tree English tireless Proto-Germanic *-inōną Proto-Indo-European *-dyé- Proto-Germanic *-atjaną Proto-Indo-European *-tus Proto-Germanic *-þuz Proto-Germanic *-assuz Proto-Germanic *-inassuz Proto-West Germanic *-nassī Old English -nes Middle English -nesse English -ness English tirelessness From tireless + -ness.
Meanings
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(uncountable) The property of being tireless.
His tirelessness in helping the poor won him an award and a nervous breakdown from exhaustion.