Wiktionary
needn't
contraction (context UK English) need not
Usage examples of "needn't".
Palmer, but I do think she might have ASKED papa and mama, anyway--she needn't have been afraid just to ask them.
She needn't have bothered, for at their approach a door lit up and caroled a welcome.
Carrots's good 'nough for me, an' if I'm suited, other folks needn't ter interfere," growled the boy, with renewed suspicion.
And you try and see if you can't be a good boy, for once, and you needn't take any more medicine.