faultful

C2+ Topic:Describing Qualities

US /ˈfɔltfəl/ UK /ˈfɔːltfəl/ See IPA manual

Meanings

1

adj
full of faults; blameworthy or defective

His faultful reasoning collapsed under scrutiny.

Thesaurus

Synonyms

1 adj · full of faults; blameworthy... faulty defective flawed blameworthy imperfect culpable

Opposites

faultless flawless perfect blameless

Word family

Related forms fault faultless faulty

Etymology

From 'fault' + the suffix '-ful' ('full of'). 'Fault' is from Old French 'faute' ('lack, failing'), from Vulgar Latin '*fallita', from Latin 'fallere' ('to deceive, fail').

faute Old French fallere Latin

View etymology graph ->

Topics

Describing Qualities Word Formation & Derivatives

External links

# faultful

**Type:** Word
**Level:** C2+
**Part of speech:** adj
**IPA (US):** /ˈfɔltfəl/
**IPA (UK):** /ˈfɔːltfəl/

## Meanings
1. full of faults; blameworthy or defective

## Examples
- His faultful reasoning collapsed under scrutiny.

## Synonyms
- faulty
- defective
- flawed
- blameworthy
- imperfect
- culpable

## Antonyms
- faultless
- flawless
- perfect
- blameless

## Related Forms
- fault
- faultless
- faulty

## Roots and Affixes
- Root: faute
- Root: fallere

## Etymology
From 'fault' + the suffix '-ful' ('full of'). 'Fault' is from Old French 'faute' ('lack, failing'), from Vulgar Latin '*fallita', from Latin 'fallere' ('to deceive, fail').

## AI Etymology
Faultful comes from 'fault' + the suffix '-ful' ('full of'). 'Fault' is from Old French 'faute' ('lack, failing'), from Vulgar Latin '*fallita', from Latin 'fallere' ('to deceive, fail'). Morphologically, the form is compositional, with the named elements combining to produce the modern spelling and sense. In present use, it is used as an adjective meaning "full of faults; blameworthy or defective", so the historical material remains connected with the current sense rather than standing as bare ancestry. The wider English family includes related forms such as fault, faultless, and faulty, showing how the same historical material continues to organize neighboring vocabulary. The named historical forms include Old French faute and Latin fallere, keeping the history tied to concrete forms rather than a loose resemblance. Its semantic neighborhood is marked by faulty, defective, flawed, and blameworthy on one side and contrasts such as faultless, flawless, and perfect on the other, locating the modern specialization without adding a new origin story.

## Topics
- Describing Qualities
- Word Formation & Derivatives

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