mindmap root((不定)) inconstant implies an incapacity for steadiness and an inherent tendency to change: the supply of the material was too ~ to rely on. fickle suggest unreliability because of perverse changeability and incapacity for steadfastness: performers discover how ~ the public can be. capricious suggests motivation by sudden whim or fancy and stresses unpredictability : an utterly ~ manner of selecting candidates. mercurial implies a rapid changeability in mood, especially between depression and elation: so ~ in temperament that no one knew what to expect. unstable implies an incapacity for remaining in a fixed position or on a steady course, when applied to persons, suggests a lack of emotional balance: in love she was impulsive and ~.