Tristfuly or Tristfully: How To spell?
The word Tristfuly is misspelled against Tristfully, an adverb meaning "In a tristful manner; sadly."
Tristfully has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings tristfu & y which should not be misspelled with single 'L'
Wrong Spelling:  tristfu-l-y  Correct Spelling:  tristfu-ll-y 
Check more misspelled words of Tristfully to spell it correct.