o acculturation
o acknowledgement of order
o active listening
o address
o addressee
o adjournment (of a meeting)
o advice of despatch
o agenda
o analytical report
o annual report
o Any Other Business (AOB)
o appeal to emotions
o application letter
o arm gesture
o asynchronous communication
o attendance
o attention curve
o attention span
o attitude
o audience
o audience analysis
o audience profile
o audience resistance
o authorisation
o authorised report
o avoiding style