"Witful" is a unique and lesser-known word that means possessing or demonstrating wit or cleverness. However, if you are looking for alternative ways to express this quality, there are several synonyms that can be used interchangeably. "Witty" is perhaps the most commonly used synonym, encompassing the same idea of being quick-witted and humorous. Additionally, "clever", "sharp", and "smart" can be used to describe individuals who possess witful qualities. "Intelligent" and "astute" also convey the notion of being mentally sharp and quick, making them effective substitutes for the word "witful". These synonyms offer a range of options to convey someone's cleverness and intelligence.