INDELIBLE
indelible, unerasable
(adjective) cannot be removed or erased; “an indelible stain”; “indelible memories”
Source: WordNet® 3.1
Etymology
Adjective
indelible (comparative more indelible, superlative most indelible)
Having the quality of being difficult to delete, remove, wash away, blot out, or efface.
Synonym: unerasable
Antonyms: delible, uninsertable
(figurative) Incapable of being canceled, lost, or forgotten.
Synonyms: unerasable, unforgettable
Incapable of being annulled.
Source: Wiktionary
In*del"i*ble, a. Etym: [L. indelebilis; pref.in- not + delebilis
capable of being destroyed: cf. F. indélébile. See In- not, and
Deleble.] [Formerly written also indeleble, which accords with the
etymology of the word.]
1. That can not be removed, washed away, blotted out, or effaced;
incapable of being canceled, lost, or forgotten; as, indelible
characters; an indelible stain; an indelible impression on the
memory.
2. That can not be annulled; indestructible. [R.]
They are endued with indelible power from above. Sprat.
Indelible colors, fast colors which do not fade or tarnish by
exposure.
– Indelible ink, an ink obliterated by washing; esp., a solution of
silver nitrate.
Syn.
– Fixed; fast; permanent; ineffaceable.
– In*del"i*ble*ness, n.
– In*del"i*bly, adv.
Indelibly stamped and impressed. J. Ellis.
Source: Webster’s Unabridged Dictionary 1913 Edition