- 1 undercut somebody/something to sell goods or services at a lower price than your competitors to undercut someone's prices We were able to undercut our overseas rivals by 5%.
- 2undercut somebody/something to make something weaker or less likely to be effective synonym undermine Some members of the board were trying to undercut the chairman's authority.
NAmE//ˌʌndərˈkʌt//Verb Forms present simple I / you / we / they undercut
he / she / it undercuts
past simple undercut
-ing form undercutting