Question Author
I'm between 2 houses at the moment so I don't have my old New Oxford handy, but I do have the Oxford Illustrated which includes "moither" (Def: worry, perplex, be incoherent or wandering), and the Readers Digest Universal which also includes "moither" (Def: - also moider - to confuse, baffle or bewilder). Intersting, as the common usage up here means to hassle or complain - as in "stop mithering" - or in another sense, to worry (or more specifically not care or be bothered either way) - as in "I'm not mithered".