The word Slubering is misspelled against Slubbering, which is present continuous of "Slubber"
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Slubbering has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Slu & ering which should not be misspelled with single 'B'
Wrong Spelling: Slu-b-ering
Correct Spelling: Slu-bb-ering
Check more misspelled words of Slubbering to spell it correct.