UNTHRIFT'Y, adjective 1. Prodigal; lavish; profuse; spending property without necessity or use. 2. Not thriving; not gaining property; as un unthrifty farmer. 3. Not gaining flesh; as an unthrifty ox. 4. Not vigorous in growth, as a plant.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI