Masquerain is a word that seems fairly specific, but there are a few synonyms that can be used instead. One option is "mask," which refers to something that covers or disguises the face. Another possibility is "disguise," which can be used to describe something that conceals or alters one's appearance. "Camouflage" is a similar term that refers to the use of coloration or patterns to blend in with surroundings. Finally, "fraud" or "imposter" could be used if one wants to emphasize the deceptive nature of a masquerade or disguise.