1. make a fuss; moan: Northern English"we shouldn't sit here mithering over a set of numbers"
▪ pester or irritate (someone):Northern English"the pile of bills would mither her whenever she felt good"
Word Originmid 19th century: variant of moider ‘bewilder, exhaust, wander about aimlessly’, of uncertain origin; perhaps from Irish modartha ‘black, murky, morose’.
