Compulsory 

Optional.

For when you are organizing a "compulsory" event or meeting and people choose not to attend because for no other reason, they just don't want to.

"Hi person, please attend this meeting. It is compulsory."

"No. I don't want to."

Compulsory by KnightSmithJones April 27, 2014

compulsory 

is sth that is required for everyone.

I get a C minus in my english class, which unfortunately is compulsory in the University.

compulsory by Yetzi Nayelli Macedo Zavala June 17, 2008

Compulsory heterosexuality 

When somebody experiences "attraction" to the opposite gender because that expectation has been pushed on them by the patriarchal society, this is quite often experienced by lesbians. It is quite difficult to distinguish between your own feelings and those which you are expected to feel.

I don't know if I am really attracted to Harry Styles or it is just compulsory heterosexuality because I do think I am a lesbian.

Compulsory heterosexuality by Iamagaylikeyou December 30, 2018

Compulsory University Education Movement

Compulsory University Education Movement, also shortened as CUEM, is an intellectual and scientific movement that advocates University (Higher) Education should be compulsory such as elementary school and high school actually are. CUEM advocates that university fees and taxes should be heavily lowered or even abolished for people be able to graduate in higher education, and it also advocates that exams such as SAT and ENEM should be abolished since everyone will have access to higher education, those exams wouldn't be necessary for majority of universities.

"The Compulsory University Education Movement advocates that with University Education being compulsory, people will have more access to science and technology, and will be better prepared for life and for the future, it also advocates that university education is somehow already compulsory, but there aren't places for everyone and everyone should have access to them as they have to elementary school and high school."

Compulsory University Education Movement by Full Monteirism January 11, 2021

Compulsory age status

When a student turns 18, they may freely sign out of school, or drop out of school without parent's permission.

TRANSLATION: They can skip a shitload of classes and receive no consequences!

Sebastian: Where's Jon?
Anthony: He's taking advantage of his compulsory age status!

Compulsory age status by Anthony Suarez May 24, 2005

Emoji Compulsory Reaction Disorder (ECRD) 

This is the urge you feel when you either want to click on existing or add new reaction emojis to conversations on Slack or any other platform that offers Emoji reactions.

Youssef and Angelo seem to have an Emoji Compulsory Reaction Disorder (ECRD). They just cannot stop clicking the emojis they see.

Emoji Compulsory Reaction Disorder (ECRD) by semyou November 26, 2019

Compensory

The thing that people think of when they forget the word, "compensatory"

Matthew: Compensory
Madeleine: Don't you mean compensatory?

Compensory by meowsies123 October 11, 2019