- Amigo
- Amine
- Amino acid
- Amity
- Amla
- Ammeter
- Ammo
- Ammonite stone
- Amnesia
- Amongst
- Amoral
- Amorphous
- Amphetamine
- Amphiboly
- Ample
- Ampule
- Ampuversary
- Amuse
- Anamnesis
- Anatomical
- Amusement park
- Amusingly
- An apple of discord
- An assylum
- An item in phyrotechnic
- An object of ridicule
- An thesis
- An ugly duckling
- Anaerobic
- Anaesthesia
- Anaesthesiologist
- Anaesthetize
- Anal fissure
- Analog computer
- Analysis
- Analyst
- Analystical
- Anantha
- Anarchy
- Anathematize
- Ancestoral home
- Ancestral wealth
- Anchoring
- Ancients
- And so on
- Androgen
- Androgynous
- Anesthesia
- Anesthsia
- Angered
- Anglo-american
- Anglophile
- Anglophobe
- Angry word
- Anile
- Animal husbandry
- Animatedly
- Animation
- Animus
- Ankle joint
- Anklet
- Annalist
- Anneal
- Annexure
- Annihilate
- Annihilates
- Anniversary
- Anno domini
- Annona
- Annotate
- Announcer
- Annoyed
- Annually
- Annular eclipse
- Anointed
- Anointing
- Anomaly
- Anonymous
- Anonymously
- Aortis
- Anothers
- Answer the door
- Answerable
- Ant
- Ant-lion
- Antagonism
- Ante-mortem
- Antecedent
- Antedate
- Antediluvian
- Antelope
- Antemeridian
- Antenatal
- Anthem
- Antherdiopore
- Anthracite
- Anthrax
- Anthropogenic
- Anthropography
- Anti lice