Wordnet 3.0
VERB (2)
1. 
 have or develop complicating consequences; 
- Example: "These actions will ramify"[syn: complexify, ramify]
2.  make complex; 
- Example: "he unnecessarily complexified every problem"
WordNet (r) 3.0 (2006):
complexify
    v 1: have or develop complicating consequences; "These actions
         will ramify" [syn: complexify, ramify]
    2: make complex; "he unnecessarily complexified every problem"