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Word of the Day Tuesday, June 23, 2026

fastidious

/ˌfæstɪˈdiːʃəs/ adjective · British & US
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What does fastidious mean?

The word fastidious describes someone or something that is meticulous and demanding in their standards, paying close attention to detail, especially in matters of cleanliness, order, or precision. This attention to detail can be an admirable quality, reflecting a person's diligence and commitment to excellence. However, it can also be perceived as excessive or finicky, implying that someone is too focused on minor details. Fastidious is often used to describe individuals who take pride in their work or personal appearance, but it can also be applied to describe processes or systems that require a high level of precision. Understanding the nuances of fastidious can help individuals communicate more effectively and accurately convey their intended meaning.

adjective

Having a strong attention to detail, especially in matters of cleanliness, order, or precision. Being meticulous and demanding in one's standards.

Senses
  1. Having a strong attention to detail
  2. Demanding in one's standards
Example

"She was a fastidious editor, ensuring that every comma and period was in its correct place."

More examples

"The fastidious chef inspected every ingredient before preparing the meal."

"He was fastidious about his appearance, spending hours getting dressed in the morning."

Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.

Etymology of fastidious

The word fastidious originates from the Latin 'fastidiosus', meaning 'squeamish' or 'delicate', which is derived from 'fastidium', meaning 'disgust' or 'aversion'. The term has evolved over time to encompass a broader range of meanings related to attention to detail and precision.

Usage notes

Formal or informal, often used to describe someone's positive qualities, but can also imply excessive or unreasonable attention to detail.

Synonyms for fastidious

Antonyms of fastidious

Rhymes with fastidious