The characteristic or quality of being grubby.(noun)
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Use "grubbiness" in a sentence
"There is, for some reason, something especially grim about pubs near stations, a very particular kind of grubbiness, a special kind of pallor to the pork pies."
"Mr. Vann's feat is to make all this grubbiness feed Irene's claustrophobia until it explodes in a tremendously disturbing conclusion."
"This seems tailor-made to whip up the very grade grubbiness Abeles condemns."