What does defaecate mean?
Defaecate is a formal verb meaning to expel feces from the body. It is used in medical examinations, veterinary reports, biological studies, sanitation discussions, and other contexts where the process is being described directly and clinically. In ordinary conversation, speakers are more likely to use the shorter and more familiar verb defecate, especially in American English. Defaecate is the conventional British spelling, although both spellings can be understood and are recorded in major English dictionaries. The word has a matter-of-fact, sometimes bluntly clinical tone rather than an inherently humorous or offensive one. Its formality can make it useful in professional writing where greater precision or a neutral register is desirable. Defaecation is the corresponding noun, while defaecated and defaecating are its usual inflected forms. Although unusual in everyday speech, defaecate is valuable because it names bodily elimination explicitly without adding vulgarity.
verbTo expel feces from the body. The word is especially associated with formal, medical, scientific, and legal contexts.
- To expel feces from the body.
"The veterinarian asked when the dog had last defaecated."
"The veterinarian asked when the dog had last defaecated."
"The report noted that the birds had defaecated on the platform, prompting a safety inspection."
The extra “ae” is chiefly British; in American English, the familiar spelling is usually defecate.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does defaecate come from?
Defaecate comes from Latin defaecare, a verb meaning to cleanse or clear out. It was formed from the prefix de-, meaning apart or out, and faex, the Latin word for dregs, sediment, or feces. The English word entered use in the early modern period, and its development reflects the regular British preference for the spelling with ae; the form defecate represents the simplified or American spelling.
Related word forms
How defaecate is actually used
This is a formal or technical verb rather than the ordinary conversational term. It is especially natural in medical, biological, veterinary, and legal writing. Although recognized in American English as a variant spelling, it is much less common there.
Easily confused with defaecate
Defecate is the more common spelling in American English and worldwide, while defaecate is the traditional British spelling of the same verb.