The phrase "hath coition" is a formal and archaic term that refers to sexual intercourse. There are various synonyms used to replace the phrase and express the same meaning. Some of the most commonly used synonyms include copulate, mate, fornicate, bonk, have sex, make love and bed. These words have been used over time to describe the act of sexual intercourse in different tones and contexts. Some of the terms may be vulgar or inappropriate, while others are more commonly accepted and used in polite conversation. Regardless of the choice of synonym, it is always important to speak and write with appropriate language and respect.