Making the mouth pucker, say (4 letters)

{ Answer }

SOUR

{ Related Clues }

Bitter
Down (on)
___ grapes
Grumpy
Lemonlike
Morose
Tart
Aesop's grapes
Bar offering
Bartender's concoction
Become disillusioned
Go bad
Like a lemon
Off-key
Off, as a note
Kind of cream or dough
Like a crab apple
Like unripe apples
Whisky ___ (bar drink)

{ Tags }

acidic, bad, bar, causing, cream, dough, drink, go, grapes, key, kind, lemon, like, off, order, pucker, puckering, some, sour, tart, whiskey

{ Notes }

The answer SOUR is seen frequently, appearing about once every 170 puzzles.