Fibrilous or Fibrillous: How To spell?
The word Fibrilous is misspelled against Fibrillous, an adjective meaning "Pertaining to, or composed of, fibers."
Fibrillous has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings fibri & ous which should not be misspelled with single 'L'
Wrong Spelling:  fibri-l-ous  Correct Spelling:  fibri-ll-ous 
Check more misspelled words of Fibrillous to spell it correct.