The word 'supplied' is built upon the verb 'supply', which entered English in the 14th century from Old French 'souploier' meaning "to fill up, make full." This Old French term derived from Latin 'supplere', a compound of 'sub-' (meaning "under, up from below") and 'plere' (meaning "to fill"). The core logic is of filling up from below to complete or replenish something. The addition of the '-ed' suffix, of Germanic origin, marks the word as the simple past tense or past participle, indicating a completed action of providing or making something available.

Structure: sup (under) + ply (fill) + ed (past/participle suffix) - sup: Latin origin (sub-), a prefix meaning "under, from below". - ply: Latin origin (plere, via Old French plier), meaning "to fill". - ed: Old English origin, a suffix indicating the past tense or past participle form of a verb.