Nuttily is an adjective that describes someone or something as being crazy or eccentric. There are several synonyms for this word that can be used to describe a person's behavior or an object's appearance. Some examples of synonyms for nuttily include peculiarly, oddly, eccentrically, bizarrely, wackily, and madly. These words can be used in place of nuttily to add more descriptive detail to a sentence. For instance, you could say that your friend's behavior was peculiarly funny, or that the design of your new shirt was bizarrely unique. Regardless of which synonym you use, the key is to communicate the sense of unconventional or strange behavior.