sour

As verbs the difference between sour and reinforce

is that sour is (label) to make sour while reinforce is (senseid)to strengthen, especially by addition or augmentation.

As an adjective sour

is having an acidic, sharp or tangy taste.

As a noun sour

is the sensation of a sour taste.

As adjectives the difference between sour and undefined

is that sour is having an acidic, sharp or tangy taste while undefined is lacking a definition or value.

As a noun sour

is the sensation of a sour taste.

As a verb sour

is (label) to make sour.

As verbs the difference between treated and sour

is that treated is (treat) while sour is (label) to make sour.

As an adjective sour is

having an acidic, sharp or tangy taste.

As a noun sour is

the sensation of a sour taste.

As adjectives the difference between virulent and sour

is that virulent is (chiefly|medicine|of a disease or disease-causing agent) highly infectious, malignant or deadly 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

(label) to make sour.

As adjectives the difference between sour and square

is that sour is having an acidic, sharp or tangy taste while square is shaped like a (the polygon).

As nouns the difference between sour and square

is that sour is the sensation of a sour taste while square is (geometry) a polygon with four sides of equal length and four angles of 90 degrees; a regular quadrilateral whose angles are all 90 degrees.

As verbs the difference between sour and square

is that sour is (label) to make sour while square is to adjust so as to align with or place at a right angle to something else.

Sour is a related term of fierce.

As adjectives the difference between sour and fierce

is that sour is having an acidic, sharp or tangy taste while fierce is extremely violent, severe, ferocious or savage.

As a noun sour

is the sensation of a sour taste.

As a verb sour

is (label) to make sour.

Sour is a synonym of acetose.

As adjectives the difference between sour and acetose

is that sour is having an acidic, sharp or tangy taste while acetose is sour like vinegar; acetous.

As a noun sour

is the sensation of a sour taste.

As a verb sour

is (label) to make sour.

Sour is a related term of intractable.

As adjectives the difference between sour and intractable

is that sour is having an acidic, sharp or tangy taste while intractable is not tractable or to be drawn or guided by persuasion; not easily governed, managed, or directed; uncontrollable; incurable; violent; stubborn; obstinate.

As a noun sour

is the sensation of a sour taste.

As a verb sour

is (label) to make sour.