Noun

• S: (n) loneliness, solitariness (the state of being alone in solitary isolation)
• direct hypernym / inherited hypernym / sister term
• S: (n) isolation (a state of separation between persons or groups)
• S: (n) solitude (the state or situation of being alone)
• S: (n) solitude, purdah (a state of social isolation)
• S: (n) loneliness, solitariness (the state of being alone in solitary isolation)
• S: (n) quarantine (enforced isolation of patients suffering from a contagious disease in order to prevent the spread of disease)
• S: (n) insulation, insularity, insularism, detachment (the state of being isolated or detached) "the insulation of England was preserved by the English Channel"
• S: (n) alienation, estrangement (separation resulting from hostility)
• S: (n) anomie, anomy (personal state of isolation and anxiety resulting from a lack of social control and regulation)
• S: (n) privacy, privateness, secrecy, concealment (the condition of being concealed or hidden)
• derivationally related form
• S: (n) aloneness, loneliness, lonesomeness, solitariness (a disposition toward being alone)