| 叩 | [ koù ] to knock, to kowtow |
| 叩問 | [ koù wèn ] (literary) to inquire, to ask, question |
| 叩應 | [ koù yìng ] call-in (loanword) |
| 叩拜 | [ koù baì ] to bow in salute, to kowtow |
| 叩球 | [ koù qiú ] spike (volleyball) |
| 叩見 | [ koù jiàn ] to kowtow in salute |
| 叩謁 | [ koù yè ] to visit (esp. one's superiors) |
| 叩門 | [ koù mén ] to knock on a door |
| 叩關 | [ koù guān ] to knock at the gate (old), to make an approach, to invade, to attack the goal (sports) |
| 叩頭 | [ koù toú ] to kowtow (traditional greeting, esp. to a superior, involving kneeling and pressing one's forehead to the ground), also written 磕頭|磕头[ke1 tou2] |
| 叩首 | [ koù shoǔ ] to kowtow, also written 磕頭|磕头[ke1 tou2] |
| ⇒ 三跪九叩 | [ sān guì jiǔ koù ] to kneel three times and kowtow nine times (formal etiquette on meeting the emperor) |
| ⇒ 跪叩 | [ guì koù ] to kowtow |