- Aetiology
- Affability
- Affably
- Affaiars
- Affair
- Affaire de coeur
- Affect
- Affected
- Affectedness
- Affectionate
- Affects
- Affirmation
- Afflicted
- Afflicting
- Afflictive
- Afforest
- Affranchise
- Affronted
- Afoot
- Aforementioned
- Afraid of his own shadow
- Afrikaans
- After
- After a fashion
- After petticoat
- After that
- Afterbirth
- Afterglow
- Aftermath
- Against
- Against time
- Agathokakological
- Aged person
- Agedness
- Agenda
- Aggrieve
- Aggrieved
- Agiary
- Agility
- Aglets
- Agnate
- Ago
- Agonizing
- Agriculture
- Agronomist
- Aground
- Ah
- Ahead of ones time
- Aide-me moir
- Ail
- Aim at
- Aimed at
- Aint
- Air hostess
- Air letter
- Airbase
- Airfield
- Airing
- Airliner
- Airmail
- Airplane
- Airshaft
- Airy
- Airy-fairy
- Ajar
- Ajmir
- Akimbo
- Akin
- Alacrity
- Aladdin
- Alarm
- Alarmed
- Albatross
- Albumen
- albumin
- Alcoholic
- Alder
- Alehouse
- Alfresco
- Algae
- Alias
- Alice
- Alight
- Aligned
- Alike
- Alimentary canal
- Aliquot
- Alkalimeter
- Alkaline salt
- Alkalization
- Alkaloid
- All agog
- All of a shake
- All over with
- All the
- All-embracing
- All-fired
- Allah
- Allegiance
- Allegory