Indelible

Part of speech: adjective (a.)

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.

Synonyms: Fixed; fast; permanent; ineffaceable. In*del"i*ble*ness, n. In*del"i*bly, adv. Indelibly stamped and impressed. J. Ellis.