late 14c., "alike, equally; indiscriminately;" c.1400, "unconcernedly, carelessly;" early 15c., "impartially, without preferring one to the other;" from indifferent + -ly (2).
she shrugged indifferently
indictment
indie
Indies
indifference
indifferent
indifferently
indigence
indigency
indigene
indigenous
indigent