- algebra
- alphabetically
- aircrew
- a fly on the wall
- acetylene
- ailurophobia
- a hit below the belt
- acrylic
- activator
- add time
- a blood relative
- actuarial
- accrete
- after growth
- alack
- abiotic
- airing cupboard
- an assylum
- americana
- ablative case
- agonising
- address size
- aerial vehicle
- alopecia
- allergen
- abm
- alacarte
- an opening flower
- americium
- abrakadabra
- a page in history
- a good number of
- aconite
- achievement quotient
- aide-de-camp
- altimeter
- adnation
- after-taste
- affronted by
- a good while
- an acquatic plant
- aimed at
- abusing
- all the while
- abba
- angelic
- anger
- anglican
- anguish
- animal kingdom
- animalcule
- animated
- anise
- anise seed herb
- ankle
- annihilated
- annotation
- announcer
- annoy
- annunciate
- anodyne
- anoint
- anointing sick
- anole
- anomalous
- ant-lion
- antagonist
- antagonistic
- antemeridian
- anthem
- antherdiopore
- anthill
- anthology
- anthropography
- anthropological
- anti-aircraft
- antifreeze
- antimacassar
- antimony
- antipathetic
- antiphon
- antique
- anyplace
- aortal
- apepsy
- aperture
- apology
- apophysis
- apostacy
- apparatus
- apparition
- appeal
- appearance
- applicator
- applique
- appointed
- apprehensible
- appress
- approachable
- apt