1) Bad 2) Edgy 3) Geeky 4) Lame 5) Nerdy 6) Not ok 7) Square 1) Definitely not hip 2) Dweebish 3) Hardly hip 4) Hardly in vogue 5) Like nerds 6) Like the thing not to do 7) Nerdy or dweebish 8) Nerdy or square 9) Not acceptable 10) Not hip 11) Not hip at all 12) Not mellow 13) Not with it 14) Square 15) Unfashionable and boring 
Uncool is slang for unsophisticated; unfashionable.
[adj] - (spoken slang) unfashionable and boring
adjective (spoken slang) unfashionable and boring
not self-assured or relaxed: He felt very uncool, making a speech to strangers. · not sophisticated or worldly-wise.