Improvident :: Improvident (a.) Not provident; wanting foresight or forethought; not foreseeing or providing for the future; negligent; thoughtless; as, an improvident man..
Provident :: Provident (a.) Foreseeing wants and making provision to supply them; prudent in preparing for future exigencies; cautious; economical; -- sometimes followed by of; as, aprovident man; an animal provident of the future..
Providential :: Providential (a.) Effected by, or referable to, divine direction or superintendence; as, the providential contrivance of thing; a providential escape..