The best replacement for nag is nagin.

The best alternatives to nag are rated as following:
★★★★★  nagin
★★★★  imsl
★★★★  pester
★★★  javelin
★★  nam
★★  venky
★  chiru

Your alternative for nag is not listed? Suggest!
Speaking about nag, one probably shouldn't forget about tabu.

Other search terms related to nag and their ratings are:
★★★★★ tabu
You have in mind a companion for nag and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of nag in all years. Click on graph for more.
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