the word 'unabridged' is a relatively modern english formation, built upon the older verb 'abridge'. 'abridge' entered english from old french abregier, which itself derived from late latin abbreviare, meaning "to shorten". the latin term is a compound of ad- (to) and breviare (to shorten), from brevis (short). the english prefix 'un-', of germanic origin, is added to negate the action, creating the sense of "not shortened". the suffix '-ed' is then attached to form an adjective describing the state of the text. thus, the literal meaning "not having been shortened" directly and logically conveys the modern definition of a complete, full-length work.

Structure: un (not) + abridge (shorten) + ed (adjective suffix) un: old english, a prefix meaning "not". abridge: middle english, from old french abregier, meaning "to shorten". ed: old english, a suffix forming adjectives from verbs, indicating a state or condition.