Can you spell correctly?

Every line contains one word which is not spelled correctly. Which is it?

1. ceiling, deceive, recieve, correspondence, clique
2. bravado, chasm, ambassador, feign, acquital
3. malicious, irelevant, interrogative, martyr, indisputable
4. hindrance, gruesome, etiqette, expedient, curriculum
5. embroidery, benevolent, elimination, primitive, vulnarable
6. undoutedly, versatile, unanimous, respite, retrieve
7. prejudice, poignancy, mallicious, monotony, maintenance
8. apology, applicant, arrangement, astma, apostrophe
9. chaufeur, consequence, aerial, adolescence, abstain
10. colonel, envious, existance, legitimate, fashionable
11. insufficient, internally, inept, forgery, headquaters 
12. dilema, frivolous, council, bachelor, asphalt
13. dialogue, hospitality, crypt, coleague, dominance
14. melodious, obsolete,  prefarably, perceive, sophomore
15. predecessor, sieve, rehearsal, genious, suburban

You will find the Key in the first comment.