Tuby or Tubby: How To spell?
The word Tuby is misspelled against Tubby, an adjective meaning "Resembling a tub; specifically sounding dull and without resonance, like a tub; wanting elasticity or freedom of sound; as, a tubby violin."
Tubby has double "bb" is mispronounced as "b"Remember double 'BB' in between the strings Tu & y which should not be misspelled with single 'B'
Wrong Spelling:  Tu-b-y  Correct Spelling:  Tu-bb-y 
Check more misspelled words of Tubby to spell it correct.