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1.
Frudent is a combination of Prudent and Frugal.

To save money by not wasting it on things you dont actually need.

pru·dent
adjective
1.
wise or judicious in practical affairs; sagacious; discreet or circumspect; sober.
2.
careful in providing for the future; provident: a prudent decision.

fru·gal
adjective
1.

economical in use or expenditure; prudently saving or sparing; not wasteful: What your office needs is a frugal manager who can save you money without resorting to painful cutbacks. Synonyms: thrifty, chary, provident, careful, prudent, penny-wise, scrimping; miserly, Scotch, penny-pinching. Antonyms: wasteful, extravagant, spendthrift, prodigal, profligate.
For example:

Mum: You really need to start saving money, you need to be really frudent at Christmas.
Me: FRUDENT?!
Mum: Yeah, Frugal and Prudent, Frudent.
Me: Mum! You just invented a word! I'm putting that on Urban Dictionary!!
by iRox November 13, 2012