Definitions

1. noun

A person who comments, especially on the internet.

“The blogger appreciated the thoughtful comments from her readers.”

2. noun

A person who comments on something, such as a sports event or a news story.

“The sports commentator was a well-known commenter on the game.”

3. noun

A person who comments on or reviews something, such as a movie or a product.

“The tech commenter provided a detailed review of the new smartphone.”