| 厮 | [ sī ] mutually, with one another, manservant, boy servant, guy (derog.) |
| 厮守 | [ sī shoǔ ] to stay together, to rely on one another |
| 厮打 | [ sī dǎ ] to fight together, to come to blows |
| 厮搏 | [ sī bó ] to fight at close quarters, to tussle |
| 厮杀 | [ sī shā ] to fight at close quarters, hand-to-hand |
| 厮混 | [ sī hùn ] to hang out together with (derog.), to mix with |
| 厮熟 | [ sī shú ] familiar with one another |
| 厮缠 | [ sī chán ] to tangle with, to get involved, to pester |
| 厮锣 | [ sī luó ] small gong |
| ⇒ 耳鬓厮磨 | [ ěr bìn sī mó ] lit. heads rubbing together (idiom), fig. very close relationship |