(computing) Capable of being marked with a comment. (dated) Worthy of comment; remarkable.

What is the definition of commenter?

: one who comments especially : one who leaves a comment on an Internet site, story, page, etc. … every blogger and commenter and self-anointed pundit, could outperform any robot writer at a fraction of the cost. —

What is the verb for comment?

comment. verb. commented; commenting; comments.