The word submittal means to present or submit something, often in written form. Some antonyms for the word submittal include withholding, retaining, and concealing. These antonyms imply that the information or document is being kept secret or held back intentionally. Other antonyms include disregard, ignore, and neglect, which suggest a lack of interest or attention towards the matter being discussed. In contrast to submittal, which denotes a sense of cooperation and collaboration, these antonyms suggest a sense of withholding or disinterest, and can be used to convey a variety of tones or meanings depending on the context.