"Dizzard" is an obsolete term that means a foolish or stupid person. Synonyms for this word include the terms "ninny," "blockhead," and "dimwit." Other similar words include "dolt," "simpleton," and "idiot." These words all describe someone who lacks intelligence or common sense. Other synonyms for "dizzard" might include terms like "imbecile," "moron," and "dunce." These words all carry negative connotations and are not considered polite or kind ways to refer to other people. While some may find these words humorous, it is important to be respectful when referring to others, regardless of their intelligence.