Crummy and Mung

Crummy adjective - Falling short of a standard.

Mung and crummy are semantically related In some cases you can use "Mung" instead an adjective "Crummy".

Mung noun - Erect bushy annual widely cultivated in warm regions of India and Indonesia and United States for forage and especially its edible seeds; chief source of bean sprouts used in Chinese cookery; sometimes placed in genus Phaseolus.

Crummy and mung are semantically related in dirty topic. You can use "Crummy" instead an adjective "Mung", if it concerns topics such as soiled.