Standard Lemma guide

tirelessness

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

The property of being tireless.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Examples

  • His tirelessness in helping the poor won him an award and a nervous breakdown from exhaustion.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

tireless determination

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: indefatigability, indefatigableness

Antonyms: none provided

Broader terms: determination, purpose

History

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.