aposiopetic
aposome
apospory
apostasy
apostate
apostatise
apostatize
apostaxis
apostil
apostle
apostlehood
apostleship
apostolate
apostolic
apostolic succession
apostolical
apostolicity
apostrophe
apostrophic
apostrophize
apothecaries' weight
apothecary
apothecia
apothecial
apothecium
apothegm
apothegmatic
apothegmatically
apothem
apotheoses