- Attract
- Attraction
- Attune
- Autoradiograph
- Autosomal chromosome
- Autotrophic
- Auxiliary bishop
- Availability
- Available resources
- Avarice
- Avenue
- Averse
- Aviation
- Aviatrix
- Aviculture
- Axiomatic
- Axis neutral
- Axle
- Ayodhya
- Azoic
- Absolvable
- Air
- a bag of bones
- A bed roses
- A bird in a golden cage
- A bit
- A black sheep
- A black-leg
- A blank look
- A bull in a china shop
- A bun in the oven
- A capella
- A chorus of thanks
- A cold sweat
- A cubit
- A raw deal
- A real man
- A sacred poetical work
- A sadder and wiser man
- A sealed book
- A short tripod
- A small drum
- A small fry
- Abaft
- Abalienate
- Abasement
- Abatement
- Abatement of rain
- Abating
- Abbess
- Abduct
- Abe
- Abecedarian
- Abominate
- Aborti-facient
- Abortionist
- Abound
- Abounding
- Above all
- Above criticism
- Absentee
- Absolute address
- Absolute control
- Abstain from
- Abstaining
- Abstention from buying
- Abstention from condemning
- Abstinence
- Abstinence from eating and drinking
- Abstinent
- Abstracted
- Accept
- Acceptability
- Acceptable
- Accepting
- Access
- Accessible
- Accidentally
- Accidial
- Acclaim
- Acclamation
- Acclamatory
- Acclimate
- Acclimation
- Acclimatise
- Acclimatize
- Accommodate
- Accompanied by
- Accretion
- Accrue
- Accumulate
- Accumulating
- Accurate
- Accurately
- Accusal
- Accusation
- Accused man
- Accustomed
- Accustomed to
- Ace