Atagen or Attagen: How To spell?
The word Atagen is misspelled against Attagen, a noun meaning "A species of sand grouse (Syrrghaptes Pallasii) found in Asia and rarely in southern Europe."
Attagen has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings a & agen which should not be misspelled with single 'T'
Wrong Spelling:  a-t-agen  Correct Spelling:  a-tt-agen 
Explore spell check of Attagen to spell without errors.