ex‧cept‧ing /ɪkˈseptɪŋ/ 
 preposition formal used to introduce the only thing or person in a group about which a statement is not true
 Synonym : except (for): 
 O'Rourke answered all the questions excepting the last one.
 O'Rourke answered all the questions excepting the last one.  [TahlilGaran] Dictionary of Contemporary English ▲