Atainder or Attainder: How To spell?
The word Atainder is misspelled against Attainder, a noun meaning "A stain or staining; state of being in dishonor or condemnation."
Attainder has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings a & ainder which should not be misspelled with single 'T'
Wrong Spelling:  a-t-ainder  Correct Spelling:  a-tt-ainder 
Find more wrongly spelled words of Attainder to spell it well.