complicate
v.
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.
〔蒋〕[com-加强意义，plic重叠，重复→多层，复杂，-ate动词后缀] 使复杂，变复杂;[-ate形容词后缀，…的] 复杂的
〔李〕[com-=together一起；plic=to fold折；-ate v.=to make使……→“to make (things) fold together使事物折叠在一起”→]Ⅰv. make intricate or difficult使复杂化