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2.
Not smooth. Rough. Socially inept.
I had a smoothless night last night, didn't sleep a wink.

That sandpaper is smoothless.

His approach to picking up women is so smoothless that he never gets a date.
by Poolshark53 February 26, 2010
 
1.
The opposite of smooth. Lacking smooth or ease.
Traffic, a flat tire, and a speeding ticket made the trip smoothless.
by Dave DDDDDDDDd April 14, 2008