--> Interchangeable has vowels 'ea' together mispronounced as 'eu'
Word contains consecutive vowels 'EA' in between alphabets interchang & ble is misspelled as 'EU'
Wrong Spelling:  interchang-eu-ble 
Correct Spelling:  interchang-ea-ble 
Check more misspelled words of Interchangeable to spell it correct.