Voluntered or Volunteered: How To spell?
The word Voluntered is misspelled against Volunteered, which is past tense of "Volunteer"
Volunteered has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Volunt & red which should not be misspelled with single 'E'
Wrong Spelling:  Volunt-e-red  Correct Spelling:  Volunt-ee-red 
Check more misspelled words of Volunteered to spell it correct.