心理學 xīnlǐxué psychology Origin Definitions Defs Strokes Stroke Words Sentences Sents 心理 xīnlǐ noun psychology psychology; mentality; the internal mental activities of a person, including thoughts and feelings学 學 xué nounaffix branch of learning (bound form) a subject or branch of study; often used as a suffix for -logy, -ics, or -science