Verbs

(v)obscure, befog, becloud, obnubilate, haze over, fog, cloud, mistmake less visible or unclear“The stars are obscured by the clouds”, “the big elm tree obscures our view of the valley”
(v)confuse, blur, obscure, obnubilatemake unclear, indistinct, or blurred“Her remarks confused the debate”, “Their words obnubilate their intentions”