silly or meaningless
inane - silly
If something is ‘inane’, it is stupid and lacking in any convincing or significant quality. This is a formal word that tends to be used to make a point about the foolishness of something forcefully, but without resorting to insulting terms. For that reason. it is more commonly used in a professional environment.
Gary considers himself to be the class joker. That’s why he’s always making inane remarks.
Meetings should be concise and constructive, but here people just sit about chatting inanely.
Mark believes that the dumbing-down of society can in part be attributed to the inanity of modern television.