TVR's definitions

not rly

meaning not really, used by people too slow to type whole words, also abbreviated to "nt rly".
alternate response to the question "ya rly" which is all too common internet slang.

<question maker> you actually did it
<answerer> ya rly
<questoin maker> bs man
<answerer> not rly (nt rly)

by TVR December 18, 2005