breadth

The word 'breadth' is a native English formation, originating from the Old English noun 'brǣdu', which meant 'broadness' or 'width'. This term was derived from the adjective 'brād' (modern 'broad') by adding the abstract noun suffix '-þu' (modern '-th'), a common Germanic pattern for forming nouns denoting qualities or states. Over time, the phonetic form evolved from 'brǣdu' to Middle English 'brede' and eventually to 'breadth', with the 'd' being restored from the root 'broad' and the suffix solidified as '-th'. Thus, the word's literal construction means "the state or quality of being broad," a meaning it retains directly in modern usage, extending from physical width to figurative comprehensiveness.

Structure: bread (broad) + th (noun suffix) 'bread' is from Old English 'brǣdu' (broadness, breadth), itself from the Germanic root of 'broad'. 'th' is a native English noun-forming suffix indicating a state, condition, or quality.