The word Wasail is misspelled against Wassail, a noun meaning "A festive or drinking song or glee."
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Wassail has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings wa & ail which should not be misspelled with single 'S'
Wrong Spelling:  wa-s-ail 
Correct Spelling:  wa-ss-ail 
Find more wrongly spelled words of Wassail to spell it well.