semi-formal

Wearing slacks and a button down shirt. No need for a jacket or tie.
I'm glad this party is a semi-formal party, I can't afford a jacket or a tie!
by DJ Yeyo September 22, 2006
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semi-sex

coitus which is stopped in the middle before ejaculation takes place; coitus which is not accompanied by ejaculation at the end. The male partner deliberately or otherwise withdraws his penis from his partner's vagina while still engaged in the sex. This act will deprive both the partners of enjoyment of orgasm.
by uttam maharjan March 23, 2010
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semi-bisexual

a sexuality that doesn't exist. it means that you're bisexual, but you're attracted to one gender. excuse me? it's something like "i'm bilingual but i only speak english". how can you be bisexual and be attracted to only one gender?
person 1 : hey! i'm semi-bisexual
person 2 : that doesn't exist.
by hhmilaa May 22, 2021
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Semi-rection

When a man sees some-one hot and gets a half erection
When your penis grows bigger but it doesnt go upwards like a normal erection and is therefore a half erection giving the name semi-rection
Dude 1: Man that girls hot!
Dude 2: Shes ayt ive only got a Semi-rection

Dave: Man my balls are so small so im going to try to get a Semi-rection to make it look bigger.
by Superjordz September 02, 2007
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Semi-famous

When you have more than 28 followers on your social media account.
Van has 29 followers on twitter, he’s Semi-famous!
by Semi-famous-van August 13, 2018
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semi-sick

When you're too sick to operate normally but not sick enough to skip school/work. Symptoms include: excessive sneezing, runny nose,sore throat, headache, etc.
"Dude you look terrible"
"Yeah... I feel pretty bad"
"Then go home and get some rest"
"Can't I'm only semi-sick"
by i feel terrible right now March 23, 2010
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Semi-boner

A semi-boner is when a man's penis is no longer erect after blowing his load or just becoming aroused.
Some guys get a semi-boner to playfuly slap each other in the face with it.
by Tiea August 04, 2008
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