prevaricate

Short definition from Wiktionary

Verb

1. 1
   To deviate, transgress; to go astray (from).
2. 2
   To speak or act in a manner that is intentionally ambiguous or evasive; equivocate.
3. 3
   To collude, as where an informer colludes with the defendant, and makes a sham prosecution.
4. 4
   To undertake something falsely and deceitfully, with the purpose of defeating or destroying it.