Passivity refers to the state of being inactive or lacking the ability to act. Synonyms for passivity include inactivity, indolence, inertness, lethargy, lassitude, sluggishness, torpor, apathy, and listlessness. Inactivity, indolence, and inertia refer to a lack of energy or motivation. Lethargy and torpor specifically imply a feeling of fatigue or drowsiness. Lassitude is a general sense of weariness or exhaustion, while sluggishness suggests a slow and dull response. Apathy connotes a lack of interest or concern, and listlessness implies a lack of enthusiasm or spirit. Understanding these synonyms can help you choose the appropriate word to convey passivity in your writing.