sour

As adjectives the difference between sour and rancorous

is that sour is having an acidic, sharp or tangy taste while rancorous is full of rancor; bitter; unforgiving.

As a noun sour

is the sensation of a sour taste.

As a verb sour

is to make sour.

As adjectives the difference between caustic and sour

is that caustic is capable of burning, corroding or destroying organic tissue while sour is having an acidic, sharp or tangy taste.

As nouns the difference between caustic and sour

is that caustic is any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic while sour is the sensation of a sour taste.

As a verb sour is

to make sour.

Acerbic is a synonym of sour.

As adjectives the difference between sour and acerbic

is that sour is having an acidic, sharp or tangy taste while acerbic is tasting sour or bitter.

As a noun sour

is the sensation of a sour taste.

As a verb sour

is to make sour.

Sour is a synonym of acrid.

As adjectives the difference between acrid and sour

is that acrid is sharp and harsh, or bitter and not to the taste; pungent while sour is having an acidic, sharp or tangy taste.

As a noun sour is

the sensation of a sour taste.

As a verb sour is

to make sour.

As adjectives the difference between corrosive and sour

is that corrosive is eating away; having the power of gradually wearing, hanging, or destroying the texture or substance of a body; as the corrosive action of an acid while sour is having an acidic, sharp or tangy taste.

As nouns the difference between corrosive and sour

is that corrosive is that which has the quality of eating or wearing away gradually while sour is the sensation of a sour taste.

As a verb sour is

to make sour.

As adjectives the difference between sour and unfriendly

is that sour is having an acidic, sharp or tangy taste while unfriendly is not friendly; hostile; mean.

As nouns the difference between sour and unfriendly

is that sour is the sensation of a sour taste while unfriendly is an enemy.

As a verb sour

is to make sour.

As nouns the difference between sweat and sour

is that sweat is fluid that exits the body through pores in the skin usually due to physical stress and/or high temperature for the purpose of regulating body temperature and removing certain compounds from the circulation while sour is the sensation of a sour taste.

As verbs the difference between sweat and sour

is that sweat is to emit sweat while sour is (label) to make sour.

As an adjective sour is

having an acidic, sharp or tangy taste.

As adjectives the difference between sour and pungent

is that sour is having an acidic, sharp or tangy taste while pungent is having a strong odor that stings the nose, said especially of acidic or spicy substances.

As a noun sour

is the sensation of a sour taste.

As a verb sour

is to make sour.

As adjectives the difference between sour and biting

is that sour is having an acidic, sharp or tangy taste while biting is causing a stinging sensation.

As nouns the difference between sour and biting

is that sour is the sensation of a sour taste while biting is the action of the verb to bite .

As verbs the difference between sour and biting

is that sour is (label) to make sour while biting is .

As adjectives the difference between sour and harsh

is that sour is having an acidic, sharp or tangy taste while harsh is unpleasantly rough to the touch or other senses.

As verbs the difference between sour and harsh

is that sour is (label) to make sour while harsh is (slang) to negatively criticize.

As a noun sour

is the sensation of a sour taste.