Nagging rhymes with:
snagging, bagging, bragging, dragging, flagging, lagging, reflagging, sagging, snagging, tagging, unflagging, wagging
Nagging sounds like:
nakanishi, nakasone's, nanchang, nanjing, nanking, nasons, new-mexicans, niceness, nickens, nicknames, nissan's, nissans, nixon's, nixons, niznik, non-nonsense, noneconomic, nonsense, nosiness, nosing, nuisance, nuisances, nunsense