obnubilate

Verb (transitive)

ob=nu=bil=ate

WORDNET DICTIONARY

obnubilate(v = verb.perception) becloud, befog, cloud, fog, haze over, mist, obscure - make less visible or unclear; "The stars are obscured by the clouds"; "the big elm tree obscures our view of the valley"

is one way to conceal, hide

Sample sentence:
Something ----s something

obnubilate(v = verb.cognition) blur, confuse, obscure - make unclear, indistinct, or blurred; "Her remarks confused the debate"; "Their words obnubilate their intentions"

is one way to alter, change, modify

Sample sentences:
Somebody ----s something
Something ----s something

obnubilate, v. t. [L. obnubilatus, p. p. of obnubilare to obscure. See Ob-, and Nubilate.].

To cloud; to obscure. Beddoes. [1913 Webster]