undefeated

adjectives

victorious
"undefeated in battle"; "an undefeated team"
undefeated
antonym
defeated
is similar to
experiencing triumph
triumphant, victorious
is similar to
not conquered
unbeaten, unconquered, unvanquished
is similar to
not forced to bow down to a conqueror
unbowed
see also
having succeeded or being marked by a favorable outcome
"a successful architect"; "a successful business venture"
successful