Definition of undefeated
: not defeated : not having suffered a defeat <an undefeated team/player> : not including any losses or defeats <an undefeated season> <a team with an undefeated record>
First Known Use of undefeated
UNDEFEATED Defined for Kids
Definition of undefeated for Students
: having no losses
Seen and Heard
What made you want to look up undefeated? Please tell us where you read or heard it (including the quote, if possible).