- Amalgam
- Amanuensis
- Analyze
- Ami
- Amidships
- Amiss
- Ammonia
- Amnesty
- Amok
- Among muslims
- Amusing
- An agony uncle
- An air of mystery
- An early bird
- An inter-planetary period
- An opening flower
- An upanishad
- Anatomically
- Ancestors
- Ancestral
- Ancestral home
- Anchor
- Anchorage
- Anchorite
- Anchovy
- And
- And another thing
- And how
- And so forth
- Android
- Annotation
- Announcing
- Annoy
- Annoying
- Annual
- Annul
- Annulment
- Annuls mirabilis
- Annunciate
- Anode
- Anoint
- Anointing sick
- Anole
- Anthelmintic
- Anther lobe
- Anthocephalus indicus
- Anthocyanins
- Anthropocene
- Anthropology
- Anthropomorphism
- Anti
- Anti virus software
- Anti-aircraft
- Anti-grammatical
- Anti-incumbent
- Anti-money laundering
- Antibiotic
- Anxiety disorders
- Any
- Any day now
- Anyplace
- Anything but
- Anything small
- Anyway
- Aourora
- Apathy
- Apepsy
- Aperture
- Apex
- Applicability
- Application form
- Applies
- Applying
- Appointee
- Apportion
- Appraise
- Appraisement
- Appreciable
- Appreciated
- Aptitude test
- Aqua-lung
- Aquaponics
- Aquaris
- Aquarist
- Aquarium
- Aqueduct
- Aquiline
- Arab colonist
- Arabian
- Arabian sea
- Arable
- Arbitrate
- Arbitration
- Arbitrator
- Arbitrators
- Archway
- Arctic
- Arctic pole
- Ardent desire
- Ardent spirits