Atemperment or Attemperment: How To spell?
The word Atemperment is misspelled against Attemperment, a noun meaning "Attemperament."
Attemperment has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings a & emperment which should not be misspelled with single 'T'
Wrong Spelling:  a-t-emperment  Correct Spelling:  a-tt-emperment 
Explore spell check of Attemperment to spell without errors.