different between swanky vs skanky

English

swank +? -y

swanky (comparative swankier, superlative swankiest)

(informal) Rather posh, elegant, ritzy.
- 1930, Frank Richards, The Magnet, Tale-Bearer in Chief
  His manner never had been modest or retiring. Now it was unmistakably swanky; he was putting on side to an extent that made fellows who observed him smile and shrug their shoulders.

swanky (countable and uncountable, plural swankies)

skank +? -y

skanky (comparative skankier, superlative skankiest)

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