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Definition of fellatio

fellatio

/fəˈleɪ.ʃi.oʊ/
fel · la · ti · o
Plural:fellationes
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fellatio Lexical Profile

fellatio Game Scores & Validity

• noun

1

Oral stimulation of the penis.

Example

"The public health brochure provided clinical information regarding the transmission risks associated with unprotected fellatio."

Synonyms
View all synonyms for fellatio

Word Nuance & Usage

"Fellatio" is a formal or clinical term used primarily in medical, psychological, or legal contexts; in everyday speech, informal terms or the general phrase "oral sex" are much more common.

• Nearby Words

feline
felix
fell
fellatio
fellatrix
feller
fellow

Word Origin & Etymology

Coined in Modern Latin in the late 19th century from the past participle stem of the Latin verb "fellare," meaning "to suck."

Cite this Entry

Wordmom. (2026). Definition of Fellatio. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/fellatio
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