Find the odd number / letters / word from the given alternative:

Hard : Soft
Long : High
Sweet : Sour
Pointed : Blunt

The answer is C. Sweet : Sour.

In the other options, the two words are opposites. Hard is the opposite of soft, long is the opposite of high, and pointed is the opposite of blunt. However, sweet and sour are not opposites. They are both flavors.

Sweet is a pleasant, typically sugary taste. Sour is a sharp, acidic taste.