← BackshareGuessphlegmy/ˈflɛmi/adjectiveContaining, producing, or resembling phlegm; thick and mucus-like.He had a phlegmy cough that kept him awake all night.The phlegmy discharge from her nose was a sign of a bad cold.A phlegmy sound came from the patient's chest when he breathed.SynonymsmucousslimyAntonymsdry