There are many synonyms for the word "idiotic" that can be used to describe something that is foolish or senseless. Some common synonyms include foolish, ridiculous, absurd, silly, stupid, nonsensical, moronic, imbecilic, senseless, and asinine. Depending on the context of the word and the tone of the message, different synonyms may be more appropriate. For example, if trying to convey a sense of humor, using a word like "silly" may be more effective than a harsher word like "stupid." It's important to choose the right synonym for the situation to ensure that the message comes across as intended.