Protist (paramecium) sex. Basically kissing next to each other.
Damn dude, I witnessed these little shits doing conjugation!
by Ad_Ex December 12, 2018
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Conjugation of verbs is the idea that verbs will change based on certain factors. For example:

In English, the verb "to be."

(Present tense)
I /am/.
We/they/you /are/.
He/she is.

(Present subjunctive mood)
I /would be/.
We/they/you /would be/.
He she /would be/.

(Past tense)
I /was/.
We/they/you /were/.
He/she /was/.
Conjugation of English verbs is not that hard, at least when you compare it to Spanish.
by jacrispy vulcano is my mom January 19, 2018
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The act of developing and sharing new kinks among others in a group.
I developed my interests in MILFs through Symbiotic Kink Conjugation, with my online group.
by Trashol April 9, 2018
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Relating to marriage or the relationship between a married couple, as a basis definition. However the expression can be used to refer to couples. anything that is related or has to do with partnered or engaged couple, such pairs, fiancé, bf & gf. If a guy says he doesn’t want to be conjugally involved it means he doesn’t want to be involved as a your boyfriend.
Sarah: Matt I don’t want to be involved in conjugal sense.

Erick: Don’t get me wrong I love Sarah in romance sense but I don’t want to be conjugally involved with her.

Maddie: I love you but non conjugal.
by BetaBoogie January 1, 2025
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A formal way, sometimes mentioned in court, of referring marital sex.

Curiosity:
Apparently lack of sex is enough justification to file for divorce and the the "Conjugal debit" frequency is set to once every fortnight.
Given that you have failed to provide conjugal debit to your spouse, we find the divorce request valid, and must rule in their favour.
by vsousa March 1, 2010
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Sex between two consenting people.
Her daddy caught me riden’ ‘er like Sea Biscuit but was relieved when she looked over her shoulder and said, “Don’t worry daddy, it’s conjugal sex!
by Not Baker Mayfield December 6, 2017
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when two old people wake up in bed together, look at each other, and think, "...fucker."
"Hey, honey, how was your day?"
"*whispers* fucker..."
"What was that?"
"Nothing."
"You're lucky we're in conjugal love."
by ninjafools15 June 5, 2014
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