Underpuler or Underpuller: How To spell?

The word Underpuler is misspelled against Underpuller, a noun meaning "One who underpulls."

Underpuller has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings underpu & er which should not be misspelled with single 'L'
Wrong Spelling:  underpu-l-er 
Correct Spelling:  underpu-ll-er 
Check more misspelled words of Underpuller to spell it correct.