What context can I use each word in?
Learn when and how to use these words with these examples!
additional
Example
We need to hire additional staff to handle the increased workload. [additional: adjective]
Example
I have some additional information to share with you. [additional: noun]
supplementary
Example
The textbook comes with a supplementary CD that includes audio recordings. [supplementary: adjective]
Example
I bought some supplements to take as a supplementary source of vitamins. [supplementary: noun]
Good things to know
Which word is more common?
Additional is more common than supplementary in everyday language.
What’s the difference in the tone of formality between additional and supplementary?
Supplementary is more formal than additional, and is often used in academic or technical contexts.
