Ater or Atter: How To spell?

The word Ater is misspelled against Atter, a noun meaning "Poison; venom; corrupt matter from a sore."

Atter has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings a & er which should not be misspelled with single 'T'
Wrong Spelling: a-t-er
Correct Spelling: a-tt-er
Explore spell check of Atter to spell without errors.