性格

nature; disposition; character; temperament;personality
摸不透的～ unfathomable personality(or character)/陶冶～ build (or cultivate) one’s character /～孤僻unsociable(or uncommunicative)disposition/～开放large-minded; be of liberal disposition /～开朗have a bright and cheerful disposition /～内向的人introvert;introverted person/～随和easy-going(or genial) disposition/～直爽outspoken;frank;candid;forthright