Definitions
1.verbTo fill with horror; to dismay."The evidence put forth at the court appalled most of the jury."
2.verbTo make pale; to blanch.
3.verbTo weaken; to reduce in strength
4.verbTo grow faint; to become weak; to become dismayed or discouraged.
5.verbTo lose flavour or become stale.
6.adjectiveShocked, horrified by something unpleasant.