1. make (something) more complicated: "increased choice will complicate matters for the consumer"
▪ introduce complications in (an existing condition):"smoking may complicate pregnancy"
Word Originearly 17th century (in the sense ‘combine, entangle, intertwine’): from Latin complicat- ‘folded together’, from the verb complicare, from com- ‘together’ + plicare ‘to fold’.