The word Curtaened is misspelled against Curtained, which is past tense of "Curtain"
-->
Word contains consecutive vowels 'AI' in between alphabets curt & ned is misspelled as 'AE'
Wrong Spelling:  curt-ae-ned 
Correct Spelling:  curt-ai-ned 
Check more misspelled words of Curtained to spell it correct.