asperity (n.)youdaoicibaDictYouDict
c. 1200, asprete "hardship, harshness of feelings," a figurative use, from Old French asperité "difficulty, painful situation, harsh treatment" (12c., Modern French âpreté), from Latin asperitatem (nominative asperitas) "roughness," from asper "rough, harsh," which is of unknown origin; in Latin used also of sour wine, bad weather, and hard times. Figurative meaning "harshness of feeling" in English is attested from early 15c.
raw (adj.)youdaoicibaDictYouDict
Old English hreaw "uncooked, raw," from Proto-Germanic *khrawaz (cognates: Old Norse hrar, Danish raa, Old Saxon hra, Middle Dutch rau, Dutch rauw, Old High German hrawer, German roh), from PIE root *kreue- (1) "raw flesh" (cognates: Sanskrit kravih "raw flesh," krura- "bloody, raw, hard;" Greek kreas "flesh;" Latin crudus "not cooked," cruor "thick blood;" Old Irish cru, Lithuanian kraujas, Old Church Slavonic kruvi "blood;" Old English hrot "thick fluid, serum").

Meaning "tender, sore" is from late 14c.; of persons, "inexperienced" from 1560s; of weather, "damp and chilly" first recorded 1540s. Related: Rawly; rawness. Raw material is from 1796, with sense of "in a rudimental condition, unfinished." Phrase in the raw "naked" (1921) is from the raw "exposed flesh," attested from 1823. Raw deal "harsh treatment" attested by 1893.