backsidenoun [ C ]
uk/ˈbæk.saɪd/us/ˈbæk.saɪd/informalbackside noun [ C ] (BODY)
the part of the body that you sit on:
After cycling for the whole day, my backside was very sore.
Synonym
bottom
Thesaurus: synonyms and related words
The buttocks
- arse
- ass
- back end
- behind
- booty
- bot
- bottom
- bum
- bun
- butt
- buttock
- cheek
- derrière
- fanny
- gluteal
- haunch
- posterior
- rump
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backside noun [ C ] (BACK PART)
Indian English the back part of something:
On the backside of this building you will find a door.
Do not write anything on the backside of your answer book.
Thesaurus: synonyms and related words
After & behind
- after
- back
- back end
- background
- be hot on sb's track/trail idiom
- behind
- bring
- bring up the rear idiom
- hard/hot/close on sb's heels idiom
- heel
- hot
- in back of idiom
- in hot pursuit idiom
- leave sth in your wake idiom
- nose
- nose to tail idiom
- posterior
- rear
- wake
Idiom(s)
a boot/kick up the/your backside
get off your backside
sit (around) on your backside