phlegm

(noun) apathy demonstrated by an absence of emotional reactions. Synonyms: emotionlessness, impassivity, impassiveness, indifference, stolidity, unemotionality.

(noun) expectorated matter; saliva mixed with discharges from the respiratory passages; in ancient and medieval physiology it was believed to cause sluggishness. Synonyms: sputum.

(noun) inactivity; showing an unusual lack of energy. Synonyms: languor, lethargy, sluggishness, flatness. Example: "The general appearance of sluggishness alarmed his friends."