The word Tailess is misspelled against Tailless, an adjective meaning "Having no tail."
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Tailless has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings tai & ess which should not be misspelled with single 'L'
Wrong Spelling:  tai-l-ess 
Correct Spelling:  tai-ll-ess 
Find more wrongly spelled words of Tailless to spell it well.