The word Knable is misspelled against Knabble, a verb meaning "To bite or nibble."
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Knabble has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Kna & le which should not be misspelled with single 'B'
Wrong Spelling:  Kna-b-le 
Correct Spelling:  Kna-bb-le 
Explore spell check of Knabble to spell without errors.