The word is actually spelled 'svelte' and is documented in (non-urban) dictionaries.

It means: Slender or graceful in figure or outline; slim.
"Check out Julie, she's looking svelte today"

"Look at Sarah in that purple dress, she looks like a svelte Grimace" (as in the McDonalds character, not the facial expression)
by Milorad November 13, 2007
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Slim and trim, like the young Prince of Town.
"What's all the comotion about?" said the svelt young Prince of Town.
by SMD May 30, 2004
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A tern used to describe someone who has superior muscle tone and muscle size. Makes most other men look like total sissies when within a 15 foot radius.
John: Holy shit dude. You're lookin pretty ripped.

Travis: Yeah man, I just got back from the gym. Now I'm svelt as a motherfucker.
by jigzaggr9 July 27, 2013
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Pronouced Suh-velt. Super sweet and/or cool.
John: I found $20 on the floor!
Mary: Svelt!
by Jade C September 12, 2005
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adj. When one appears more physically attractive that usual and thinner in figure or outline.

Can be used to describe both males and females.
Wow! You look really svelte with that dress on.

With that tux? Man, you're svelte!
by Gilbert March 31, 2004
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When a woman is thin but carries much in her trunk.
“Svelte. She thick and thin at the same time” - Marvel's Luke Cage on Netflix
by Pharaohcious October 05, 2018
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Any process by which one achieves a svelte person. This can be working out, dieting, or other (though not plastic surgery), but it is not simply 'weight loss' or 'getting in shape'. It is shaping your physique in a highly conscious way with a beauty ideal that is more interested in balance and harmony than the extremes of crossfit or bodybuilding.
After a few weeks of road work and yoga, he felt his physique was svelting gamely.
by jcjnyc August 02, 2015
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