i Register
In some senses, moither is marked as UK. Watch for register when choosing this word.
verb
to bother or harass
Gie o'er mitherin thi brother an come help me wi t'weshin
To toil; to labour.
To perplex; to confuse.
She always had what her mother, who does not seem greatly to have cared for her, called “moithered” brains