The correct spelling of the word is “letter”, with double “t”. “Leter” is a misspelling of the word and should be avoided.
Leter or Letter: How To spell? The word Leter is misspelled against Letter, a noun meaning "A letter; an epistle." Letter has double "tt" is mispronounced as "t" Remember double 'TT' in between the strings le & er which should not be misspelled with single 'T' Wrong Spelling: le-t-er Correct Spelling: le-tt-er