Sputering or Sputtering: How To spell?
The word Sputering is misspelled against Sputtering, which is present continuous of "Sputter"
Sputtering has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings spu & ering which should not be misspelled with single 'T'
Wrong Spelling:  spu-t-ering  Correct Spelling:  spu-tt-ering 
Check more misspelled words of Sputtering to spell it correct.