Sour and Tough as old boots

Sour adjective - Causing or characterized by the one of the four basic taste sensations that is produced chiefly by acids.

Tough as old boots and sour are semantically related. In some cases you can use "Tough as old boots" instead an adjective "Sour".

Nearby Words: sourness, soured, sourish, souring, sourly

Sour and tough as old boots are semantically related. Sometimes you can use "Sour" instead an adjective phrase "Tough as old boots".