behind
be-hind
preposition
At the back of something or someone; in a position further back.
"The car was parked behind the shop."
adverb
In or to a place or position further back; remaining after others.
"He fell behind in the marathon."
noun
Informal term for a person's bottom or buttocks.
"He landed hard on his behind."
Thesaurus
Synonyms: behindhand, in arrears, fanny, prat, bottom, rump, tail, butt, stern, ass, tush, arse