Webster's Revised Unabridged Dictionary · 1913

Implex

Implex , adjective

[Latin implexus, past participle of implectere to infold; pref. im- in + plectere to plait: compare F implexe.]

Intricate; entangled; complicated; complex.
The fable of every poem is... simple or implex. it is called simple when there is no change of fortune in it; implex, when the fortune of the chief actor changes from bad to good, or from good to bad. — Addison