unblazoned
/ˌʌnˈbleɪzɒnd/ or /ˌʌnˈblæzənd/Definitions
1. adjective
not decorated with blazonry or heraldic devices
“The unblazoned shield hung quietly on the wall.”
2. noun
something that is not decorated or displayed
“The unblazoned heroism of the soldiers went unnoticed.”