The best replacement for convexity is duration.

The best alternatives to convexity are rated as following:
★★★★★  duration
★★★★  concavity
★  gamma
★  bond duration
★  positive convexity

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

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



Google Trends

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