The word Treicherous is misspelled against Treacherous, meaning "Perfidious."
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Treacherous has vowels 'ea' together mispronounced as 'ei'
Word contains consecutive vowels 'EA' in between alphabets tr & cherous is misspelled as 'EI'
Wrong Spelling:  tr-ei-cherous 
Correct Spelling:  tr-ea-cherous 
Check more misspelled words of Treacherous to spell it correct.