a shortened version of silly
gosh nyomi! you're such a sil!
by Caitlin C October 28, 2005
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Seizure in laughter, similar to lol.
"Why did the girl fall off the swing?"
"I don't know; why?"
"Because she had no arms, duh!"
"OH, SIL! SIL SIL SIL!"
by srrh August 7, 2004
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Sil... He is one of a kind! He may be shy at first, but even if you don't know him that well (yet), you can already tell he's a great person: he's very kind, smart, funny and loyal like you've never seen before. If he lets you into his life, don't abuse it and NEVER let him go because you will never find anyone else with a heart as pure as his.

If you make the effort to get to know him better and better, he will continue to surprise you with new things to learn about him. He is a great friend and will always be there for you. Sil is also the best person to be with in a relationship, he won't have high expectations that you have to live up to, just be yourself. He will do anything to make you happy and to make it work.

Most of the time, he deserves a lot more than he gets, so always treat your "Sil" the best you can!
When they are comfortable and at ease, a very loving side of their personality comes out, but it usually takes them a little while to warm up to new people and situations, so try to get to know your Sil better because it is definitely worth it!
by Clementine Hutchison November 22, 2021
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Sil...

He is one of a kind! He can be a bit shy in the beginning but even when you don't know him that well (yet), you can still see how great he is! He is very kind, smart, funny and the most loyal person you will ever meet. He is a good friend and will always be there for you.

He is also the best person to have a relationship with, he will try his best to make you happy and make you feel safe. He will do anything to make it work and does not have high expectations that you have to meet, just be yourself. He is romantic at the most unexpected moments and he has the purest heart.

If you make the effort to get to know him better and better, you won't regret it, he will continue to surprise you with new things you didn't know about him. If he allows you into his life, don't abuse it and NEVER let him go!

You will be lucky to have a Sil in your life, so treat your Sil the best you can!
When they are comfortable and at ease, a very loving side of their personality comes out, but it usually takes them a little while to warm up to new people and situations. But try to get to know your Sil, because it will definitely be worth it!
by Clementine Hutchison November 22, 2021
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One who is silly, or could be described as such.
Man, that Katie Knutson girl is a major sil! She liked the movie About a Boy and thinks Conan is funny!
by LP_hoss July 11, 2008
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Shortened form of Silhouette, used as a nickname.

Shortened form of silly.
Person: hey sil
Silhouette: Hey

She is such a sil... she never stops making jokes.
by -Sil February 11, 2009
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