- abjuration
- absolution
- abstinence
- account
- ablution
- abstain
- acolyte
- advent
- allah
- amen
- amice
- anathema
- angelus
- anglicanism
- annunciation
- anthem
- apocalypse
- apocalyptic
- apocalyptical
- apocrypha
- archangel
- archangelic
- Ascension Day
- assize
- assumption
- ascription
- asperges
- author
- autocephalous
- ave
- Bahai
- baptise
- baptism
- baptismal
- baptist
- baptistery
- baptistry
- baptize
- beatification
- beatify
- beadle
- benefice
- brahmin
- brethren
- breviary
- brother
- brief
- brahman
- calendar
- canon