α. Middle English no bit (transmission error), Middle English no bot, Middle English nobot, Middle English no but, 1900s– nobut (Irish English (northern)); English regional (northern) 1700s– nobbut, 1800s nobber, 1800s nobbet, 1800s nobt, 1800s no'but, 1800s– nobbat, 1800s– nobberd, 1800s– nobbit, 1800s– nobbud, 1800s– nobbur, 1800s– nobud, 1800s– nobut; also Scottish pre-1700 no but, 1800s nobut.
β. Middle English ne bot, Middle English–1600s ne but; English regional (northern) 1800s– nebber, 1800s– nebberd, 1800s– nepper, 1900s– nebbut.
γ. 1500s na but; English regional (northern) 1800s– na' but, 1900s– nabbud (Lincolnshire), 1900s– nabbut (Lincolnshire); Scottish 1800s na but.
δ. English regional (northern) 1900s– nubbut.