This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Not thrifty.

adj. Not thrifty; profuse.

Profitless; foolish; wretched.

Not thrifty; not careful of one's means; prodigal; profuse; lavish; wasteful.

Not thriving; not in good condition; not vigorous in growth.

Preventing thrift or thriving; mischievous; wicked.

"It was said, too, that his living was riotous and unthrifty, which is, in part, the customary sin of soldiership."

profuse   

improvident    thriftless    unobserving    unambitious    shiftless