indelible
adjective
[ ɪnˈdɛlɪb(ə)l ]
• (of ink or a pen) making marks that cannot be removed.
• "an indelible marker pen"
Similar:
ineradicable,
inerasable,
ineffaceable,
unexpungeable,
indestructible,
permanent,
lasting,
persisting,
enduring,
stubborn,
ingrained,
unfading,
imperishable,
unforgettable,
haunting,
memorable,
not/never to be forgotten,
Opposite:
erasable,
Origin:
late 15th century (as indeleble ): from French, or from Latin indelebilis, from in- ‘not’ + delebilis (from delere ‘efface, delete’). The ending was altered under the influence of -ible.