\In*del"i*ble\, a. [L. indelebilis; pref. in- not +
delebilis capable of being destroyed: cf. F.
ind['e]l['e]bile. 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.