兼课   jiān kè [do some teaching in addition to one’s main occupation;hold two or more teaching jobs concurrently] 兼职教课。
尖刻   jiān kè （形）尖酸刻薄（指言语）。［近］刻薄|苛刻。
奸刻   jiān kè 亦作'奸刻'。 谓奸邪刻毒。

兼 课 尖 刻 奸