- to make complex, intricate, involved, or difficult: His recovery from the operation was complicated by an allergic reaction.
- complex; involved.
- Entomology. folded longitudinally one or more times, as the wings of certain insects.
Origin of complicate
- to make or become complex
- biology folded on itselfa complicate leaf
- a less common word for complicated
Word Origin for complicate
1620s, "to intertwine" (as a past participle adjective, early 15c.), from Latin complicatus "folded together; confused, intricate," past participle of complicare (see complication). Meaning "to make more complex" is recorded from 1832, from earlier sense "to combine in a complex way" (17c.). Related: Complicated; complicating.