different between assiduous vs indefatigable

English

Etymology

From Latin assiduus from assidere (“to sit down to”), from ad- (“to”) + sedere (“to sit”).

Cognate (via assidere) to assess.

Pronunciation

• (UK) IPA^(key): /??s?dju??s/
• (General American) IPA^(key): /??s?d?u??s/

Adjective

assiduous (comparative more assiduous, superlative most assiduous)

1. Hard-working, diligent or regular (in attendance or work); industrious.

   Synonyms: meticulous, diligent, sedulous; see also Thesaurus:industrious

   • 1917, P. G. Wodehouse, "Bill the Bloodhound" in The Man With Two Left Feet and Other Stories:

     A good deal of assiduous attention had enabled Henry to win this place in her affections.

   • 2009, Will Pavia, "Allen Klein, accountant turned manager of the Beatles, dies at 77," The Times (UK), 6 July:

     Klein rose to prominence in the 1960s by assiduous application of accounting methods to the music industry.

Usage notes

• Since the 18th century, this term has sometimes carried a connotation of servility.

Derived terms

• assiduously
• assiduousness

Related terms

Translations

References

English

Etymology

From Middle French, from Latin ind?fat?g?bilis (“untiring”), from in- (“not”) + d?fat?g? (“to tire out”).

Pronunciation

• (Received Pronunciation) IPA^(key): /??nd??fæt???bl/
• (General American) IPA^(key): /??nd??fæt???b?l/, [??nd??fæ????b?l]
• (sometimes proscribed) IPA^(key): /??nd?f??ti??b?l/
• Hyphenation: in?de?fa?tig?a?ble

Adjective

indefatigable (comparative more indefatigable, superlative most indefatigable)

1. Extremely persistent and untiring.

   Synonyms: inexhaustible, relentless, tireless, unflagging, unsinkable, untiring, unwearying

   Antonym: (much less common) defatigable

Derived terms

Translations