The word Slabering is misspelled against Slabbering, which is present continuous of "Slabber"
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Slabbering has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Sla & ering which should not be misspelled with single 'B'
Wrong Spelling:  Sla-b-ering 
Correct Spelling:  Sla-bb-ering 
Find more wrongly spelled words of Slabbering to spell it well.