Vocabulary practice

http://www.freerice.com/index.php

Words I wasn't sure about today (though I still got more than half of these right):
lamina, compunction, sacerdotal, aquiline, trephine, dander, tinea, impresario, abrogate, scissile, ratiocinate, carom.

In several cases I had a loose grasp of the correct meaning, but none of the four answers seemed to fit.