EFFI'CIENT, adjective Causing effects; producing; that causes any thing to be what is is. The efficient cause is that which produces; the final cause is that for which it is produced. EFFI'CIENT, noun The agent or cause which produces or causes to exist. 1. He that makes.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI