Complicate \Com"pli*cate\, v. t. [imp. & p. p. Complicated; p. pr. & vb. n. Complicating.]

To fold or twist together; to combine intricately; to make complex; to combine or associate so as to make intricate or difficult.

Nor can his complicated sinews fail. --Young.

Avarice and luxury very often become one complicated principle of action. --Addison.

When the disease is complicated with other diseases. --Arbuthnot.

Source: Webster's Revised Unabridged Dictionary (1913)