The term "be gild" refers to the act of adorning something with gold, often to make it look more luxurious or valuable. Antonyms for "be gild" would therefore be words that describe the opposite process - that is, removing decoration or ornamentation from something. Some possible antonyms could include plain, bare, unadorned, austere, simple, basic, or stark. These words all suggest the absence of decoration or embellishment, and stand in contrast to the glittering excess that "be gilding" implies. Used in context, antonyms for "be gild" could be employed to suggest a more stripped-down, natural aesthetic.