The term be-deckings usually refers to the act of adorning or decorating something with various ornaments or trimmings. The opposite or antonyms for this word could be undecorated, plain, simple, unadorned, or sparsely decorated. When something is undecorated, it means there are no embellishments, no adornments, and no ornamentation. Simple refers to something that is plain and without any complexity, whereas unadorned means there are no embellishments or decorations added to it. Lastly, sparsely decorated refers to something that has only a few decorative pieces and has a minimal or understated appearance. These antonyms are useful to describe things that are not overly ornamented or embellished.