This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. comparative form of grey: more grey

"She clicked on another subscreen and a rougher, greyer, wide-angled image emerged of a girl—the same girl, if you looked hard enough—walking up the road towards the camera, swinging her handbag by its long straps."

darken    oolong    heart-sickening    yellower    stiller    adumbration    all-concealing    tableside    five-o'clock    rosy-fingered