untarnished

US /ʌnˈtɑːr.nɪʃd/
UK /ʌnˈtɑːr.nɪʃd/
1.

onbevlekt

If someone has an untarnished reputation, etc., it has not been spoiled or damaged, and people's opinion of the person continues to be good:

:
From the very beginning, she has been an aloof, mysterious figure, untarnished by scandal.