The word "splinterizes" is a verb that means to break into small, sharp fragments or splinters. There are a variety of synonyms for this word, including "shatters," "fractures," "disintegrates," "sunders," and "breaks apart." Each of these synonyms describes a similar action, where something is broken or destroyed into smaller pieces. Additionally, words like "fragmentizes," "cracks," and "smashes" can also be used as synonyms for "splinterizes," depending on the context in which they are used. Overall, these different synonyms provide speakers and writers with a range of options to precisely communicate the destructive nature of something that is splinterized.