Troler or Troller: How To spell?
The word Troler is misspelled against Troller, a noun meaning "One who trolls."
Troller has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings tro & er which should not be misspelled with single 'L'
Wrong Spelling:  tro-l-er  Correct Spelling:  tro-ll-er 
Find more incorrect spellings of Troller to spell right way.