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1.
A nicer way to say smart ass. You can use this in an office or when kids are around instead of saying smart ass or if you are a stick in the mud and don't cuss.
Adam was being a smart alec so I didn't give him a cookie
by PTM October 25, 2006
 
2.
Someone who tries to correct everything such as evedyday simple slang
Dad:Everyone put on yur seatbelts
Son:It wont go in
Dad:Thats Ok we'll be there in a second
Son:Its been 10 seconds dad
Dad:Stop being a smart alec
by Broski400 January 29, 2014