The word Oblongnes is misspelled against Oblongness, a noun meaning "State or quality of being oblong."
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Oblongness has double 'ss' in the end mispronounced as 's'
Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  oblongne-s 
Correct Spelling:  oblongne-ss 
Find more incorrect spellings of Oblongness to spell right way.