Sped or Speed: How To spell?
The word Sped is misspelled against Speed, a noun meaning "One who, or that which, causes or promotes speed or success."
Speed has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Sp & d which should not be misspelled with single 'E'
Wrong Spelling:  Sp-e-d  Correct Spelling:  Sp-ee-d 
Explore spell check of Speed to spell without errors.