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Synonyms

backside

American  
[bak-sahyd] / ˈbækˌsaɪd /

noun

  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

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.

And have the most important play happen while some latecomer blocks your view with his backside while trying to find his seat.

From The Wall Street Journal • May 7, 2026

A backside spin, shorted to 'back' in the trick name, are set from the toe edge of the board and see the rider's chest facing downhill initially.

From BBC • Feb. 16, 2026

There are various types of flips that have unique names that don't spell out exactly what the trick contains - including wildcat, tamedog, backflip, frontflip, rodeo, backside rodeo and corked spin.

From BBC • Feb. 16, 2026

Sometimes, those gates can snap back and deliver a parting gift – a smack on the backside.

From Los Angeles Times • Feb. 15, 2026

It carried enough fuel to stay up for three hours, but its ejection seat was very uncomfortable and my backside got numb long before two hours had passed.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins

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