Antenal or Antennal: How To spell?
The word Antenal is misspelled against Antennal, an adjective meaning "Belonging to the antennae."
Antennal has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings ante & al which should not be misspelled with single 'N'
Wrong Spelling:  ante-n-al  Correct Spelling:  ante-nn-al 
Explore spell check of Antennal to spell without errors.