The word 'upended' is a modern participial adjective derived from the verb 'upend,' which itself is a straightforward 19th-century English compound. It logically combines the directional adverb 'up' with the noun 'end,' creating a verb meaning "to set on end" or "to turn upside down." The '-ed' suffix then transforms this action into a descriptive state. The semantic journey is transparent: to place the 'end' that is normally at the bottom in an 'up' position, leading directly to the literal meaning of inversion, which easily extends to figurative senses of disruption and overturning.

Structure: up (upward) + end (terminus) + ed (adjective suffix) - up: Old English origin, meaning "up, upward, aloft." Functions as a directional prefix. - end: Old English origin (from 'ende'), meaning "termination, limit, boundary." Functions as the core noun root. - ed: Old English origin (past participial suffix '-ed', '-ad'), here forming a participial adjective.