The initial idioms of the letter N

nearly jump out of skin	neat
neat as a bandbox	neat as a pin
neato	nebbish
Nebraska sign	neb
necessary	necessary evil
necessity	necessity is the mother of innovation
Necessity is the mother of invention	Necessity knows no law
neck	neck and crop
neck and neck	neck of the woods
neck with	necker's knob
necking knob	need
need (something) like a fish needs a bicycle	need doing
need head examined	need I remind you that
need I say more	Need I say more?
need like a hole in the head	some elbow room