unbeaten
adjective
[ ʌnˈbiːt(ə)n ]
• not defeated or surpassed.
• "they were the only side to remain unbeaten"
Similar:
undefeated,
unconquered,
unbowed,
unvanquished,
unsubdued,
unsurpassed,
unequalled,
unrivalled,
unbroken,
triumphant,
victorious,
supreme,
matchless,
second to none,
