The definition of impecunious is a person without any money.
An example of impecunious is someone living on the street.
having no money; poor; penniless
Origin of impecunious; from in- + obsolete pecunious, rich ; from Middle English ; from Old French pécunieux ; from Classical Latin pecuniosus, wealthy ; from pecunia, money: see pecuniary
Having little or no money.
Origin of impecuniousin–1 + pecunious, rich (from Middle English, from Old French pecunios, from Latin pecūniōsus, from pecūnia, money, wealth; see peku- in Indo-European roots).
- Lacking money.