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tr. & intr.v. com·pli·cat·ed, com·pli·cat·ing, com·pli·cates
1. To make or become complex or perplexing.
2. To twist or become twisted together.
adj. (-kĭt)
1. Complex, intricate, and involved.
2. Biology Folded longitudinally one or several times, as certain leaves or the wings of some insects.

[Latin complicāre, complicāt-, to fold together : com-, com- + plicāre, to fold; see plek- in Indo-European roots.]
References in classic literature ?
The inventor of the language seems to have taken pleasure in complicating it in every way he could think of.
Without complicating the question by asking how I come to be in that condition, I will merely inquire whether it is, or is not, the duty of a Christian community to help the needy.
I had no time to explain all this to the viscount; besides, there was nothing to be gained by complicating the position.
It was here he learned the art of drawing up an account, and the much more valuable one of complicating it.
He went out quickly, for fear of complicating the affair by a display of premature ill-humor.
they are always doctoring and increasing and complicating their disorders, and always fancying that they will be cured by any nostrum which anybody advises them to try.