undersell

As verbs the difference between outsell and undersell

is that outsell is to sell more than the others while undersell is to sell goods for a lower price than a competitor.

As a noun underswell

is an undercurrent.

As a verb undersell is

to sell goods for a lower price than a competitor.

As a noun undershell

is the plastron of a turtle or tortoise.

As a verb undersell is

to sell goods for a lower price than a competitor.

As verbs the difference between undersell and underseal

is that undersell is to sell goods for a lower price than a competitor while underseal is to coat (the underbody or chassis of a vehicle) with underseal.

As a noun underseal is

a thick, resilient coating applied to the underbody or chassis of an automobile to protect against damage from small stones, etc, which would rapidly chip ordinary paint and allowing rusting to begin.