fastidiousness

IPA/fæˈstɪdiəsnəs/
IPA/fæˈstɪdiəsnəs/

fastidiousness — noun

1. the tendency to focus with extreme care on tiny aspects, requiring that every el

1.nounC1
Definition

the tendency to focus with extreme care on tiny aspects, requiring that every element of a task or object meets exacting standards of correctness — for example, checking the alignment of every paragraph in a report, or making sure every ingredient in a recipe is measured to the exact gram.

Example

Aisha's fastidiousness about the layout of her presentation slides meant she spent an extra hour adjusting font sizes and margins.

fastidiousness about [noun] — careful attention to detail

The head chef praised Diego for his fastidiousness in arranging each dish exactly the same way every time.

fastidiousness in [gerund] — habitual precision

Common collocations
  • fastidiousness about detail
  • fastidiousness in work
  • famous for his/her fastidiousness
  • known for fastidiousness
  • obsessive fastidiousness
  • artistic fastidiousness
Synonyms
  • meticulousness

    very similar in meaning; both describe careful attention to detail, but meticulousness carries a slightly more neutral or positive tone

  • precision

    focuses on accuracy and exactness rather than the behavioural habit of caring about details

  • thoroughness

    emphasises completeness of effort rather than the small details themselves

  • scrupulousness

    stronger moral dimension — caring about details because it is the right thing to do

Antonyms
  • carelessness

    lack of concern for detail or correctness

  • sloppiness

    messy or untidy work that ignores small details

Grammar Patterns

fastidiousness about [noun/gerund]

fastidiousness in [noun/gerund]

Usage Note

Frequently followed by 'about' or 'in' plus a noun or gerund (e.g. 'fastidiousness about detail', 'fastidiousness in arranging'). Unlike 'perfectionism', fastidiousness emphasises the care taken over small matters rather than the goal of achieving flawlessness.

Common Mistakes

His fastidiousness made him a relaxed, easy-going manager.
His fastidiousness made him a demanding, detail-oriented manager.
Fastidiousness describes careful attention to detail, not a relaxed attitude.
She showed fastidiousness by ignoring the messy kitchen.
She showed fastidiousness by cleaning every corner of the kitchen until it sparkled.
Fastidiousness involves careful action, not neglect.

2. a very strong feeling of dislike or disgust towards anything dirty, messy, or un

2.nounC1
Definition

a very strong feeling of dislike or disgust towards anything dirty, messy, or unclean — for example, refusing to sit on a public bench that looks grimy, or washing one's hands immediately after touching anything sticky.

Example

Yuki's fastidiousness about cleanliness drove her to wipe down her desk with disinfectant every morning.

fastidiousness about cleanliness — strong avoidance of dirt

The Watanabe family's fastidiousness regarding hygiene made them avoid public restrooms when possible.

Common collocations
  • fastidiousness about cleanliness
  • fastidiousness regarding hygiene
  • extreme fastidiousness
  • pathological fastidiousness
  • fastidiousness about germs
  • fastidiousness about food
Synonyms
  • squeamishness

    specifically about disgust at unpleasant sights or substances, often with a physical reaction

  • finickiness

    more informal; emphasises being difficult to please about what is clean or acceptable

  • fussiness

    more general; can apply to cleanliness but also to other preferences

  • fastidiousness (sense 1)

    the same word; this sense narrows the focus to physical cleanliness rather than general detail-orientation

Antonyms
  • messiness

    the quality of being untidy or disorganised

  • slovenliness

    habitual untidiness and lack of care for cleanliness

Grammar Patterns

fastidiousness about [noun/gerund]

fastidiousness regarding [noun]

Usage Note

Often followed by 'about' or 'regarding'. This sense overlaps with 'squeamishness' but is broader — it covers not only disgust at dirt but also a strong behavioural preference for clean surroundings.

Common Mistakes

Her fastidiousness about dirt meant she never showered.
Her fastidiousness about dirt meant she showered twice a day.
Fastidiousness leads to more cleaning, not less.
Fastidiousness about germs is the same as being lazy.
Fastidiousness about germs is the same as being very careful about hygiene.
Fastidiousness involves active carefulness, not laziness.

Word family

Synonym discussion

Sense: noun/1

All five words describe careful or exact behaviour, but they differ in emphasis. Fastidiousness carries a slightly negative or obsessive tone — the person cares so much about small details that it may be excessive or annoying. Meticulousness is more neutral and often positive; a meticulous worker is thoroughly careful without being difficult. Precision focuses on the outcome: the degree of exactness in measurement, language, or action. Thoroughness is about completeness — covering all aspects, not just the small ones. Scrupulousness adds a moral layer: a scrupulous person pays attention to detail because they want to be fair and honest, not just because they dislike imperfection. For example, a fastidious proofreader might reject a text for a single inconsistent footnote style, while a scrupulous one would correct it but focus on whether the content is truthful.

fastidiousness ↗meticulousness ↗precision ↗thoroughness ↗scrupulousness

Common collocations

Nouns

Adverbs

Phrases

  • to the point of obsession
  • bordering on the obsessive
  • a mark of professionalism

Prepositions

Etymology

LatinFrenchEnglish

From Latin 'fastidiosus', meaning 'disdainful, squeamish' — itself from 'fastidium' (dislike, disgust), a compound of 'fastus' (pride, arrogance) and 'taedium' (weariness, disgust). The word entered English in the 15th century carrying both the sense of 'hard to please' (from pride) and 'easily disgusted' (from squeamishness) — two threads that survive in the modern noun fastidiousness.