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Synonyms

backside

American  
[bak-sahyd] / ˈbækˌsaɪd /

noun

backsides plural
  1. the rear or back part or view of an object, person, scene, etc.; that part which is opposite the front.

  2. rump; buttocks.


backside British  
/ ˌbækˈsaɪd /

noun

  1. the back of something

  2. informal the buttocks

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of backside

1350–1400; Middle English back syde; see back 1, side 1; compare Old English bæce backside

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

These days, that backside has turned Brunson into the most valuable asset in the entire NBA.

From The Wall Street Journal • Jun. 2, 2026

She landed a competition-first backside 1620 trick - featuring four-and-a-half rotations - but over-rotated at the very last moment.

From BBC • Feb. 12, 2026

"I gave myself a kick up the backside and said I would make an album, a real bedroom project," he says.

From BBC • Jan. 22, 2026

These days, I notice fuchsia bursts of bougainvillea instead of my mushy backside.

From Los Angeles Times • Nov. 21, 2025

He could make out Parker Head heading down to Thayer’s haymeadow and the coast; its snowy backside showed between the bare trunks.

From "Lizzie Bright and the Buckminster Boy" by Gary D. Schmidt

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