The word 'stapled' is built upon the noun 'staple', which has a journey from the physical to the functional. Its Old English ancestor, stapol, referred to a foundational post or pillar, a concept of firm support. This sense evolved to denote a principal commodity of a market (the pillar of trade) and later, in the 13th century, to the metal loop securing a bolt, emphasizing the idea of a fixed, central fastening point. The modern paper-fastening device, invented in the 19th century, directly extends this logic of a U-shaped metal piece providing a secure, binding attachment. Adding the suffix '-ed' transforms it into a verb form describing the action of applying such a fastener or an adjective describing the resulting state of being fastened.

Structure: staple (fastening device) + ed (past tense/participle suffix) - staple: From Middle English, originally meaning a post, pillar, or market center, from Old English stapol (post, pillar), of Germanic origin. - ed: A productive English suffix forming the past tense and past participle of regular verbs, and adjectives from nouns or verbs.