What is another word for not serious?
Pronunciation: [nˌɒt sˈi͡əɹɪəs] (IPA) 
When it's time to describe something that's not serious, there are several words and phrases you can turn to. One of the most common synonyms for this is "lighthearted," which suggests a playful and carefree attitude. Another option is "amusing," which indicates that something is enjoyable and entertaining, but not necessarily deep or profound. You might also use "facetious," which implies a sense of humor that's tongue-in-cheek or ironic. Other possible synonyms include "frivolous," "superficial," "jovial," "playful," "flippant," and "humorous." Each of these words carries a slightly different connotation, so choose the one that best fits the situation you're describing.
