the mind > emotion > anger > irascibility > ill-naturedness > ill nature in woman or shrewishness > behave like shrew [verb (transitive)] > nag or scold (a person) (1)
to be on at1907
colloquial. to be on about: to keep talking about, to harp on, to speak or write about (a subject). to be on at (also to be on to): to nag or…