sedulous

C2+ Topic:Describing Qualities

US /ˈsɛdʒələs/ UK /ˈsɛdjʊləs/ See IPA manual

adj

Meanings

1

adj
showing dedicated and persistent diligence

Through sedulous study she mastered three languages by twenty.

Thesaurus

Synonyms

1 adj · showing dedicated and... diligent assiduous industrious persistent painstaking tireless

Opposites

lazy idle negligent careless

Word family

Forms sedulously

Derived forms sedulouslysedulousnesssedulity

Related forms sedulity

Etymology

From Latin 'sedulus' ('busy, diligent, zealous'), apparently from the phrase 'se dolo' ('without guile'), from 'se-' ('without') + 'dolus' ('trickery').

sedulus Latin

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Topics

Describing Qualities Word Formation & Derivatives

# sedulous

**Type:** Word
**Level:** C2+
**Part of speech:** adj
**IPA (US):** ˈsɛdʒələs
**IPA (UK):** ˈsɛdjʊləs

## Meanings
1. showing dedicated and persistent diligence

## Examples
- Through sedulous study she mastered three languages by twenty.

## Synonyms
- diligent
- assiduous
- industrious
- persistent
- painstaking
- tireless

## Antonyms
- lazy
- idle
- negligent
- careless

## Derived Forms
- sedulously
- sedulousness
- sedulity

## Related Forms
- sedulity

## Roots and Affixes
- Root: sedulus

## Etymology
From Latin 'sedulus' ('busy, diligent, zealous'), apparently from the phrase 'se dolo' ('without guile'), from 'se-' ('without') + 'dolus' ('trickery').

## AI Etymology
Sedulous comes from Latin 'sedulus' ('busy, diligent, zealous'), apparently from the phrase 'se dolo' ('without guile'), from 'se-' ('without') + 'dolus' ('trickery'). The historical chain includes Latin sedulus. Older glosses in the chain include "sedulus", "busy, diligent, zealous", "se dolo", and "without guile", which help explain the semantic range of the modern word. Morphologically, sedulous is best read as compound and borrowing, yielding an English adjective shaped by both form history and later usage. In current English it functions as an adjective, with the sense "showing dedicated and persistent diligence". English derivatives include sedulously, sedulousness, and sedulity; related forms include sedulity. The result is an English adjective whose etymology preserves the older forms while supporting the word's specialized modern meaning.

## Topics
- Describing Qualities
- Word Formation & Derivatives

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