\Ne*ces"si*tous\, a. [Cf. F. n['e]cessiteux.] 1. Very needy or indigent; pressed with poverty. Necessitous heirs and penurious parents. --Arbuthnot. 2. Narrow; destitute; pinching; pinched; as, necessitous circumstances. -- {Ne*ces"si*tous*ly}, adv. -- {Ne*ces"si*tous*ness}, n.