1

For instance, if a person wants to save $200 but when he reaches at the saving of $50, spend it again and repent for that and could not save $200, which he wanted.

The term 'extravagant' is circulating in my mind but this is not the term that I want because this is an adjective.

I need noun for the one who wants his money be saved but is unable to do so.

5

Spendthrift?
I'm not sure that a spendthrift is trying to save money, but they probably wish they had!

wiki A spendthrift (also profligate or prodigal) is someone who spends money prodigiously and who is extravagant and recklessly wasteful, often to a point where the spending climbs well beyond his or her means. "Spendthrift" derives from an obsolete sense of the word "thrift" to mean prosperity rather than frugality,1 so a "spendthrift" is one who has spent their prosperity

0

impulsive

acting or done suddenly without any planning or consideration of the results:

She’s an impulsive shopper and often buys things she doesn’t need.

Cambridge

Often an impulse purchase will wipe out savings, or just mean that you can't get to your target.

  • 1
    OP needs a noun... – Jim Jun 14 '18 at 22:15

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