擅自shànzìwithout permission; on one's own authorityHSK 7-9PronunciationshànzìExample sentence他擅自做主,把公司的机密文件交给了外人。tā shànzì zuòzhǔ, bǎ gōngsī de jīmì wénjiàn jiāo gěi le wàirén.He acted on his own authority and handed the company's confidential documents to outsiders.Read and choose an answerOne fixed sampleExplore a sample