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Definition of sidepiece

sidepiece

/ˈsaɪd.piːs/
side · piece
Plural:sidepieces
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sidepiece Lexical Profile

sidepiece Game Scores & Validity

• noun

1

North American A person with whom someone has a secret romantic or sexual relationship while already in a committed relationship with another partner (slang).

Example

"Their marriage fell apart after she discovered that her husband had been seeing a sidepiece for several months."

2

A part or component forming the side of an object, structure, or garment, such as one of the temples of a pair of eyeglasses.

Example

"The optician carefully adjusted the left sidepiece of her glasses so they would sit level on her nose."

Synonyms
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Antonyms
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Word Nuance & Usage

In contemporary usage, the slang sense referring to a secret romantic partner is often spelled as two words ('side piece'), whereas the literal sense referring to a structural component is typically written as a closed compound ('sidepiece').

• Nearby Words

sidelock
sidelong
sidenote
sidepiece
sideritis
sideroad
sidesaddle

Cite this Entry

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