1) Ambiguous language 2) Ambiguous utterances 3) Evasive language 4) Gibberish, to an understudy 5) Gobbledygook 6) Relative of gibberish 7) Specialty of the two-faced Found on https://www.crosswordclues.com/clue/doubletalk
doubletalk 1. Evasive or ambiguous language. 2. Language that has no real meaning or has more than one meaning and is intended to hide the truth: 'He accused the ambassador of diplomatic double-talk.' Found on http://www.wordinfo.info/words/index/info/view_unit/2985/