The best replacement for outliers is extreme values.

The best alternatives to outliers are rated as following:
★★★★★  extreme values
★★★★★  influential points
★★★  outliners
★★★  tipping point
★★★  influential observations
★★  gaps
★  outlier
★  clusters

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

Other search terms related to outliers and their ratings are:
★★★★★ r
★★ mean
★ line plots
★ box plots
standard deviation
You have in mind a companion for outliers and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of outliers in all years. Click on graph for more.
outliers
extreme values
influential points