The word Lasitude is misspelled against Lassitude, meaning "weariness tiredness"
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Lassitude has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings la & itude which should not be misspelled with single 'S'
Wrong Spelling:  la-s-itude 
Correct Spelling:  la-ss-itude 
Check more misspelled words of Lassitude to spell it correct.