Hip
Old English hype, of Germanic origin; related to Dutch heup and German Hüfte, also to hop1.
wiktionary
From Middle English hipe, hupe, from Old English hype, from Proto-Germanic *hupiz (compare Dutch heup, Low German Huop, German Hüfte), from Proto-Indo-European *ḱewb- (compare Welsh cysgu(“to sleep”), Latin cubāre(“to lie”), Ancient Greek κύβος(kúbos, “hollow in the hips”), Albanian sup(“shoulder”), Sanskrit शुप्ति(śúpti, “shoulder”)), from *ḱew-(“to bend”). More at high. The sense "drug addict" derives from addicts lying on their hips while using certain drugs such as opium.
From Middle English hepe, heppe, hipe, from Old English hēope, from Proto-Germanic *heupǭ (compare Dutch joop, German Hiefe, Faroese hjúpa), from Proto-Indo-European *ḱewb-(“briar, thorn”) (compare Old Prussian kaāubri(“thorn”), Lithuanian kaubrė̃(“heap”)).
Unknown or disputed. Probably a variant of hep; both forms are attested from the first decade of the 20th century. [1] Some sources suggest derivation from Wolof hepi(“to see”) or hipi(“to open one’s eyes”). [2] Others suggest connection to the noun, as opium smokers were said to lie on a hip. [3] Neither of these suggestions is widely accepted, however. [1]
hip
etymonline
hip (n.1)
"part of the human body where pelvis and thigh join," Old English hype "hip," from Proto-Germanic *hupiz (source also of Dutch heup, Old High German huf, German Hüfte, Swedish höft, Gothic hups "hip"), of uncertain origin. In architecture, "external angle at the junction of two sides of a roof," from late 17c. Hip-flask, one meant to fit in a hip pocket, is from 1923. Related: Hips.
hip (n.2)
"seed pod" (especially of wild rose), a 16c. alteration of Middle English hepe, from Old English heope, hiope "seed vessel of the wild rose," from Proto-Germanic *hiup- (source also of dialectal Norwegian hjupa, Old Saxon hiopo, Dutch joop, Old High German hiafo, dialectal German Hiefe, Old English hiopa "briar, bramble"), of unknown origin.
hip (adj.)
"informed," 1904, apparently originally in African-American vernacular, probably a variant of hep (1), with which it is identical in sense, though it is recorded four years earlier.
hip (interj.)
exclamation used to introduce a united cheer (as in hip-hip-hurrah), 1827, earlier hep; compare German hepp, to animals a cry to attack game, to mobs a cry to attack Jews (see hep (2)); perhaps a natural sound (such as Latin eho, heus).
