Drossiness is a state of being dull, sluggish and lacking energy. Some synonyms for drossiness include lethargy, torpor, asthenia, and inertia. Lethargy refers to a general feeling of sluggishness or fatigue, while torpor describes a state of physical or mental inactivity. Asthenia refers to a condition characterized by weakness or lack of energy. Inertia is a term that refers to a tendency to remain inactive or resist any change in motion. Other synonyms for drossiness include apathy, languor, and lassitude. These words can be used interchangeably with drossiness to help capture the feeling of being tired, lazy, or unenergetic.