A. A habitual exercise of someone: my custom of looking at just a little in advance of slumber. See Synonyms at behavior. syn: custom, routine, exercise mean an established means of undertaking matters. custom, placed on a Local community or to somebody, indicates a more or less long lasting way https://custompennant32964.bloguetechno.com/custom-pennant-things-to-know-before-you-buy-74122544