The antonyms for the term "checked upon" can differ depending on the context. However, some common antonyms include neglect, ignore, overlook, and disregard. Neglect implies ignoring or failing to perform a duty, whereas ignore denotes the act of passing over something without giving it attention. Overlook signifies missing something despite trying to find it or looking for it, and disregard suggests a lack of attention or care towards something. It is essential to note that antonyms are words that have opposite meanings, which makes them useful for expanding vocabulary and adding depth to written and spoken communication.