thriftless Definition

thrift
noun

1. Careful spending, use or management of resources, especially money.

Thesaurus: frugality, thriftiness, economy, conservation, prudence, saving, carefulness; Antonym: waste, extravagance.
2. A wild plant with narrow bluish-green leaves and dense round heads of pink flowers, usually found near the coast. Also called sea pink.

Derivative: thriftless
adj

Not thrifty.

Etymology: 16c in these senses: Norse, meaning ‘prosperity'.