accommodate
acknowledgment (preferred over acknowledgement)
aesthetic (preferred over esthetic)
antiquated
catalog (preferred over catalogue)
commitment
conscience
consensus
counselor
dissension
drunkenness
ecstasy
embarrass
exhilarate
foreword
harass
hors d’oeuvres
inadvertent
indispensable
inoculate
insistent
irresistible
judgment (preferred over judgement)
knowledgeable
liaison
memento
millennium
nickel
occurred
occurrence
perseverance
prerogative
privilege
proceed
sponsor
tyrannous
vacuum
vilify