Definition of Tireless
Quick Meaning of Tireless
Working very hard with lots of energy and never getting tired. Someone who keeps going and going without stopping.
Detailed Definition of Tireless
Having or showing great effort, energy, and determination without becoming weary; never stopping or slowing down.
How to Pronounce Tireless
Stress pattern: Oo (2-syllable word).
Tip: Stress the first syllable: TYRE-les. The second syllable is quick and unstressed, ending with a clear 's' sound.
Watch out: Learners sometimes stress the second syllable (tire-LESS) instead of the first, or add an extra vowel sound, making it 'tire-uh-less' instead of 'TYRE-les'.
Origin and Etymology of Tireless
From Old English 'tyrge' (tired) + suffix '-less' (without). The prefix 'tire-' means fatigue + '-less' means lacking. Formed in Middle English to describe relentless workers and endeavor.
How to Use Tireless in a Sentence
Each example shows “tireless” with a CEFR level so learners can pick examples that match their fluency.
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“The tireless nurse provided exceptional care to every patient throughout the night.”
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“Her tireless efforts to promote environmental conservation inspired many people.”
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“The tireless coach dedicated every waking hour to developing young athletes.”
Synonyms and Antonyms of Tireless
Common Synonyms for Tireless
Smart Synonyms for Tireless — When to Use Each
- indefatigable
- More formal and literary; emphasizes unwavering strength over
- unflagging
- Literary variant; suggests constant resolve without weakening
- persistent
- Broader meaning; emphasizes stubborn determination across endeavors
- dedicated
- Emphasizes commitment and loyalty to a cause
Common Collocations with Tireless
These phrases pair with “tireless” in everyday English:
- tireless worker
- tireless efforts
- tireless advocate
- tireless pursuit
- tireless dedication
Common Mistakes When Using Tireless
Even fluent speakers slip up with “tireless”. Here’s how to avoid the most common errors:
- ✗ Wrong: He is tireless to help others.
- ✓ Correct: He is tireless in helping others. / He works tirelessly to help others.
- Why: Use 'tireless in' + gerund/noun with adjective form, or use the adverb 'tirelessly' with verb + infinitive.
- ✗ Wrong: The tireless improve the company performance.
- ✓ Correct: The tireless workers improved company performance. / Tireless effort improved performance.
- Why: 'Tireless' must modify a noun; it cannot function as a noun on its own.
- ✗ Wrong: She tireless worked on the project all week.
- ✓ Correct: She worked tirelessly on the project all week. / Her tireless work continued all week.
- Why: Use 'tirelessly' (adverb) to modify the verb 'worked'; 'tireless' is an adjective only.
Other Forms of Tireless
- Noun: tirelessness
- Adjective: tireless
- Adverb: tirelessly
Frequently Asked Questions About Tireless
What is the meaning of "Tireless"?
Working very hard with lots of energy and never getting tired. Someone who keeps going and going without stopping.
How do you pronounce "Tireless"?
The IPA is /ˈtaɪərləs/. Stress the first syllable: TYRE-les. The second syllable is quick and unstressed, ending with a clear 's' sound.
What part of speech is "Tireless"?
"Tireless" is an adjective at B2 level (Common European Framework).
What are synonyms for "Tireless"?
Common synonyms include indefatigable, unflagging, relentless.
How do you use "Tireless" in a sentence?
For example: "The tireless nurse provided exceptional care to every patient throughout the night."