something you say or write that expresses an opinion – Cambridge English Thesaurus article page
These are words for things that you say, especially to express your opinion.
Comment is one of the most common words used for when someone is expressing an opinion. A comment can be spoken or written.
The politician could not be reached for comment.
I thought the teacher’s comments on our paper were helpful.
I never read the comments on that website.
A remark is something you say or write that expresses an opinion or states a fact. Remark may be used to describe longer comments, especially when remark is used in the context of a speech or conference.
His controversial remarks about race were widely reported.
I’m going to ask our chairman to close the meeting with a few concluding remarks.
The word statement refers to an official comment or opinion on something.
In a statement released earlier today, the team denied allegations of cheating.
Declaration is also used to refer to an official comment or opinion, and especially an announcement of something important. Declaration is more formal than statement.
The sovereign made a formal declaration of war.
He bought her a ring as a declaration of his love.
The word observation is used when your remark is based on something that you have seen or noticed. Observation is used in formal contexts.
She makes some interesting observations about human nature in her book.
A commentary is a series of comments that share someone’s thoughts about something or that help explain something. Commentary is usually used to refer to an expert’s thoughts or opinions.
I love that sports announcer’s commentary – it’s always so funny!
His article is a scathing commentary on modern society.
If you make a comment or remark on something that is related to the topic you are discussing but is not the main topic, you can call it an aside.
The book’s playful asides make the dry subject matter much easier to read.
A comment about someone or something that is clever but is also intended to be an attack can be called a barb or, in informal US English, a zinger.
The candidates traded barbs over who was more qualified for the job.
US
Her political zingers are a staple of late-night TV.
In a discussion or argument, the very last comment given is called the last word.
He always had to have the last word.
For words related to holding an opinion, see the article at attitude.