资料来源 : Webster's Revised Unabridged Dictionary (1913)

Solitariness \Sol"i*ta*ri*ness\, n.
   Condition of being solitary.

资料来源 : WordNet®

solitariness
     n 1: the state of being alone in solitary isolation [syn: {loneliness}]
     2: the disposition to enjoy being alone