Nail your colours to the mast
Namby-pamby
Name and shame
Name is mud
Nasty, brutish and short
Nation of shopkeepers - A
Nautical phrases
Ne'er cast a clout till May be out
Needs must
Neither a borrower nor a lender be
Neither fish nor flesh, nor good red herring
Neither here nor there
Nest-egg
Never give a sucker an even break
Never knowingly undersold
Never-never land
Never the twain shall meet
New kid on the block
Nice as ninepence
Nice kettle of fish
Night owl
Nine days' wonder
Nip and tuck
Nip in the bud
Nitty-gritty
No-brainer
No dice
No holds barred
No man is an island
No more cakes and ale?
No names: no pack-drill
No rest for the wicked
No room to swing a cat
No way, Jose
Not for all the tea in China
Not playing with a full deck
Not tonight Josephine
Not worth a plugged nickel
Not worth the candle
Nothing is certain but death and taxes
Nothing succeeds like success
Now is the winter of our discontent
Nth degree
Nul points