The word Curtnes is misspelled against Curtness, a noun meaning "The quality of bing curt."
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Curtness 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:  curtne-s 
Correct Spelling:  curtne-ss 
Check more misspelled words of Curtness to spell it correct.