ace /eɪs/ aced /eɪst/ acellular acephalous /əˈsɛfələs/ acer acerb /əˈsɜːb/ acerbic /əˈsɜː(ɹ)bɪk/ acerbity /əˈsɜːbɪti/ aces /ˈeɪ.sɪz/ acetabula