gloomy vs dingy

gloomy and dingy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
gloomy	No	Yes	No	No
dingy	No	Yes	No	No

As adjectives, gloomy and dingy are synonyms defined as:

Other synonyms of gloomy include blue, dark, disconsolate, dismal, drab, drear, dreary, grim, sorry.

gloomy (adjective)	dingy (adjective)
depressingly dark	causing dejection
filled with melancholy and despondency	thickly covered with ingrained dirt or soot
causing dejection	(of color) discolored by impurities; not bright and clear