| A | B | C | D | E | F | G | H | I |
| J | K | L | M | N | O | P | Q | R |
| S | T | U | V | W | X | Y | Z |
- Naked as a Jaybird
- Naked Eye, the
- Neither Fish Nor Fowl
- Never Hear the End of It
- New York Minute
- Night Owl
- No End In Sight (to something)
- No Great Shakes
- No Holds Barred
- No Problem (Thank You Response)
- No Spring Chicken
- No Sweat (Thank You Response)
- Nose Around
- Not All It’s Cracked Up To Be
- Not Bat an Eye
- Not For All the Tea in China
- Not Have A — Bone In One’s Body
- Not My Cup of Tea
- Not Rocket Science
- Not Think Twice
- Nothing If Not
- Nothing To Write Home About
- Null and Void