[com.pli.cate] vt -cat.ed ; -cat.ing (1621) 1: to combine esp. in an involved or inextricable manner
2: to make complex or difficult
3: involve; esp: to cause to be more complex or severe "a virus disease complicated by bacterial infection"
[2]com.pli.cate adj [L complicatus, pp. of complicare to fold together, fr. com- + plicare to fold--more at ply] (1638) 1: complex, intricate
2: conduplicate