Ataintment or Attaintment: How To spell?
The word Ataintment is misspelled against Attaintment, a noun meaning "Attainder; attainture; conviction."
Attaintment has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings a & aintment which should not be misspelled with single 'T'
Wrong Spelling:  a-t-aintment  Correct Spelling:  a-tt-aintment 
Find more wrongly spelled words of Attaintment to spell it well.