
der Hintern
butt
(colloquial) A person's buttocks.
Das Kind ist beim Spielen auf den Hintern gefallen.
The child fell on his butt while playing.
butt
Loading your saved state.

butt
(colloquial) A person's buttocks.
Das Kind ist beim Spielen auf den Hintern gefallen.
The child fell on his butt while playing.

to get off your butt
(colloquial, idiom) To pull yourself together, become active, or start working on a task.
Du musst endlich den Hintern hochkriegen und für die Prüfung lernen!
You finally need to get off your butt and study for the exam!
The word 'Hintern' (butt) is colloquial. In formal, polite, or medical contexts, you should use the neutral word 'Gesäß' (buttocks) instead.
Pass auf, die Bank ist nass, sonst wird dein Hintern nass.
Watch out, the bench is wet, or your butt will get wet.
'Der Hintern' (butt) derives from the adverb 'hinten' (at/in the back), which means 'in the rear area.' So it literally refers to the rear part of the body.
Er hat sich beim Hinsetzen eine Nadel in den Hintern gestochen.
He pricked his butt on a needle when he sat down.
The idiom 'den Hintern hochkriegen' (to get off your butt) is a fixed unit. It is an informal, direct appeal to finally become active or start doing something.
Komm, krieg den Hintern hoch, wir müssen los!
Come on, get off your butt, we have to go!
ass / asshole
Arsch and Hintern refer to the same body part, but they differ in tone. Arsch is clearly vulgar and can sound aggressive. Hintern is colloquial but considerably less crude, so it is a better choice when you do not want to sound insulting.

Nach dem Sturz sagte er ruhig, dass ihm der Hintern wehtat.
After the fall, he calmly said that his butt hurt.
Nach dem Sturz fluchte er laut, dass ihm der Arsch wehtat.
After the fall, he swore loudly that his ass hurt.