The word Nonplusing is misspelled against Nonplussing, which is present continuous of "Nonplus"
-->
Nonplussing has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings nonplu & ing which should not be misspelled with single 'S'
Wrong Spelling: nonplu-s-ing
Correct Spelling: nonplu-ss-ing
Check more misspelled words of Nonplussing to spell it correct.