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1. Apathy demonstrated by an absence of emotional reactions
   - emotionlessness, impassivity, impassiveness, indifference, stolidity, unemotionality
    
2. Expectorated matter; saliva mixed with discharges from the respiratory passages; in ancient and medieval physiology it was believed to cause sluggishness
   - sputum
    
3. Inactivity; showing an unusual lack of energy
   "the general appearance of phlegm alarmed his friends";
   - languor, lethargy, sluggishness, flatness

Derived forms: phlegms

Type of: apathy, inactiveness, inactivity, inertia, mucous secretion, mucus

Encyclopedia: Phlegm