A Word A Day : Indefatigable

Sunday, 2nd September 2007 : Today's Word is ...


( Adjective )

Pronunciation : (in'di-fat'i-ga-bul)

1. Incapable of being fatigued

2. Tireless

3. Having or showing a capacity for protracted effort, regardless of difficulty or frustration

4.Showing sustained enthusiastic action with unflagging vitality


Obsolete French indefatigable, from Latin indefatigabilis : in-, not; see in–1 + defatagare, to tire out de-, intensive pref. see de– + fatīgāre, to weary


1. Inexhaustible

2. Tireless

3. Unfailing

4. Unflagging

5. Untiring

6. Unwearied

7. Weariless


1. Fatigued

2. Feeble

3. Idle

4. Tired

5. Weary

Contextual Example:

• The optimism of a healthy mind is indefatigable.

• Chief among those who did this fetching and carrying was Captain Bildad's sister, a lean old lady of a most determined and indefatigable spirit.

Related Words:

Indefatigability : Noun

Indefatigably : Adverb

Indefatigableness : Noun

Enjoy this list and then get around for preparing your own list of words. There is no better way of boosting your words power. The most effective way to build your vocabulary is described in the page on Word Power. Educational research has discovered that your I.Q. is intimately related to your Word Power. Take a standard Vocabulary test and then an intelligent test, the result in both will be substantially the same. The more extensive your vocabulary, the better your chances of success, other things being equal- success in attaining your educational goals, success in moving ahead in your business or professional career, success in achieving your intellectual potential.

Previous Word| Next Word

Go to The A Word A Day Index

Synonyms and Antonyms

Vocabulary| English Teacher| Etymology| Longest Word | Letter Writing

Proverbs| Misspelled Words| Contractions

From Indefatigable to HOME PAGE