7
A synonym for "cya" mostly used by Sia's fans. It was made popular because of how close the pronunciation of both terms sound.
by asentrix December 18, 2015
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9
Singapore International Airlines.
The premium airline in Asia.

http://en.wikipedia.org/wiki/Singapore_Airlines
Hey! Im flying to Canada on SIA!
by melvinlow September 22, 2008
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10
Swaggerific Intense Athlete; an intense athlete such as a runner or a gymnast who also has some serious swag.
"dayummm she a serious SIA. I can tell by that body"
by SIA1 August 25, 2011
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12
I'll be off hiking this weekend, while you're tethered to your computer for work. SIA if I can't respond to your emails quick enough.
by rich New Yorkers January 25, 2017
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13
A person with a dick longer than 6 inches and enjoys lesbians.
Sias.........nuf said.
by DirtySanchez August 23, 2003
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