No Sweat   
          : Very close competition / No Problem

No quarter
          : Finish with no compromise

Not my cup of tea
          : Not my type / favorite

Nuts and bolt
          : The most important parts of something

New blood
          : New people / generation

Nuts
          : Crazy

None the less / Nonetheless
          : However

None too
          : Not at all

Never do things by halves
          : Put much effort when doing something to finish it

Not the end of the world
          : Not the worst. Use to comfort people

Not a Chance
          : Not at all