/ Dictionary / Index S sludgy: Meaning and Definition of Find definitions for: sludg•y Pronunciation: (sluj'ē), [key] — sludg•i•er, sludg•i•est. of or pertaining to sludge. covered, lined with, or containing sludge. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sludging slue Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language