to engage in sexual intercoursewere both in the mood to do it
were both in the mood to do it
breed, copulate, mate, sleep
fool around, fornicate
have sex
in 1592
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。