hale
There was one word that would fit the meaning of indentation and desperation. This word would be 'rash' and also fits the four letter length.
Scam would fit this definition.
'Slit' would fit.
'Rake' might fit, or 'scum'.
fit
fit, apt
Only 'pooh' seems to fit.
Regal
The word teeth would fit the description.
There are two words that fit your search....Dune or Wash.
Users seems to fit.
'Stood' would fit.