出典:Wiktionary
出典:『Wiktionary』 (2025/04/07 17:24 UTC 版)
(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) Possibly from Latin reagō. Compare with Norwegian Bokmål reagens. The sequence of act → action → agent → agency shows morphologic and semantic parallel, and apparent cognate relation, with react → reaction → reagent → reagency.
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