Romanian word intempestiv comes from Latin tempestivus, Latin ingratus (Thankless. Ungrateful. Unpleasant, disagreeable.)

Detailed word origin of intempestiv

Dictionary entry	Language	Definition
tempestivus	Latin (lat)	(of a person) mature. Early, betimes. Timely, opportune, fitting.
ingratus	Latin (lat)	Thankless. Ungrateful. Unpleasant, disagreeable.
intempestivus	Latin (lat)	Untimely, unseasonable inopportune, inconvenient.
intempestiv	Romanian (ron)	Untimely, ill-timed.