The word Glasfuls is misspelled against Glassfuls, which is plural of "Glassful"
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Glassfuls has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings gla & fuls which should not be misspelled with single 'S'
Wrong Spelling: gla-s-fuls
Correct Spelling: gla-ss-fuls
Check more misspelled words of Glassfuls to spell it correct.