Meaning

verb make more complicated

verb make more complex, intricate, or richer

originFirst attested in the early 17ᵗʰ century; borrowed from Latin complicātus, perfect passive participle of complicō (“to fold together”) (see -ate (verb-forming suffix) and -ate (adjective-forming suffix)), from con- (“together”) + plicō (“to fold, weave, knit”); see plaid, and compare complex. See also Middle English complicate (“involved”).

Etymology from Wiktionary, CC BY-SA 3.0