indelible

1 ENTRIES FOUND:
indelible /ɪnˈdɛləbəl/ adjective
indelible
/ɪnˈdɛləbəl/
adjective
Britannica Dictionary definition of INDELIBLE
[more indelible; most indelible]
1 
: impossible to remove or forget
2 
: producing marks that cannot be erased

— indelibly

/ɪnˈdɛləbli/ adverb