transcription, транскрипция: [ ʌnraɪv(ə)ld ]
Note: in AM, use 'unrivaled'
If you describe something as unrivalled , you are emphasizing that it is better than anything else of the same kind.
He had an unrivalled knowledge of south Arabian society, religion, law and customs...
It’s a team unrivalled in stature, expertise and credibility.
= unequalled
ADJ [ emphasis ]