The word Thrible is misspelled against Thribble, an adjective meaning "Triple; treble; threefold."
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Thribble has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Thri & le which should not be misspelled with single 'B'
Wrong Spelling:  Thri-b-le 
Correct Spelling:  Thri-bb-le 
Find more wrongly spelled words of Thribble to spell it well.