impecunious

If impecunious means "penniless," then it stands to reason that "pecunious" can describe someone who has a lot of money. That is true, but "pecunious" is used with far less frequency in English than its opposite and is not found in many dictionaries. What's more, on the rare occasion when "pecunious" is put to use in English, it often means not "wealthy" but "miserly or ungenerous," as in "a pecunious attitude toward the less fortunate." "Impecunious" describes somebody who lacks the money to buy necessities, but it does not carry the connotation of desperation found in such words as "indigent" or "destitute." Both "pecunious" and "impecunious" derive via Middle English from the Latin pecunia, meaning "money."