Look:
los·er
n.
1.
1. One that fails to win: the losers of the game.
2. One who takes loss in a specified way: a graceful loser; a poor loser.
2.
1. One that fails consistently, especially a person with bad luck or poor skills: “losers at home seeking wealth and glory in undeveloped countries” (Arthur M. Schlesinger, Jr.).
2. One that is bad in quality: That book is a real loser.
lo·sel
n.
One that is worthless.
And Nigel?
Yea, slang is better than just throwing around the N-word.