This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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verb-intransitive. To engage in coitus or sexual intercourse.

adj. Coupled; joined.

v. To engage in sexual intercourse.

adj. Joined; associated; coupled.

adj. Joining subject and predicate; copulative.

verb-intransitive. To unite in sexual intercourse; to come together in the act of generation.

To join together.

To unite as a pair; especially, to unite sexually.

Joined.

v. engage in sexual intercourse

"What takes priority, our so called naturalistic sense of right and wrong or our biological desire to sexually copulate, which is essential for self preservation."

copulated    copulates    copulating   

conjoin    join   

copulate extreme   

copulation    copulin   

ride    breed    ruin    screw    have intercourse    eff    love    cover    have a go at it    fuck   

copulated    copulating   

joined    associated    coupled    copulative    united    couple    fuck    screw    make love    sleep together   

depopulate    populate