The word Dismising is misspelled against Dismissing, which is present continuous of "Dismiss"
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Dismissing has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings dismi & ing which should not be misspelled with single 'S'
Wrong Spelling: dismi-s-ing
Correct Spelling: dismi-ss-ing
Find more wrongly spelled words of Dismissing to spell it well.