Obnubilate is a verb that means to obscure, cloud, darken, or make unclear. There are several possible synonyms for this word, each with its own connotation. One option is to use the word blur, which generally suggests a lack of sharpness or definition. Another choice is to say that something is veiled or hidden, implying that it is intentionally or naturally obscured from view. Alternatively, one might use the word muddle, which suggests that things are confused or jumbled together in an indistinct manner. Whatever synonym is chosen, it should be appropriate to the context and convey the desired meaning clearly and accurately.