replyenvelope
nounUK /rɪˈplaɪˌɛnvələʊp/
US /rɪˈplaɪˌɛnvəloʊp/
A reply envelope is a small envelope you put in a letter so the other person can write back.
She included a reply envelope so her friend could answer quickly.
RELATED WORDS
OTHER MEANINGS
2. An envelope pre-addressed to the sender for sending a response.
The form came with a reply envelope for returning the signed page.
3. A digital message container used to carry a response in some messaging systems.
The server wrapped the answer in a reply envelope before sending it.
4. A small envelope used in contests or invitations to collect answers.
Please put your entry in the reply envelope and drop it in the box.