opin·ion 
/əˈpɪnjən/ noun
plural opin·ions /əˈpɪnjən/ noun 1 : a belief, judgment, or way of thinking about something : what someone thinks about a particular thing [count] ▪ Why ask (for) my opinion if you have already decided? ▪ I value your opinion. [=I respect the way you think about things] ▪ We asked for their opinions about/on the new stadium. ▪ In my opinion, it's the best car on the market. ▪ Most of the people surveyed have a high/low opinion of the organization. [=most of the people surveyed think that the organization is good/bad] ▪ She has enough knowledge of the system to offer an informed opinion [=an opinion based on information] of why it isn't working. ▪ The meeting will give residents a chance to listen to some expert opinions. [=opinions of experts] [noncount] ▪ The owner of the store is often there to offer customers expert opinion. [=an expert's opinion] ▪ Which one is better is a matter of opinion. [=people have different opinions about which one is better] ▪ I'm glad that we can have a difference of opinion [=we can disagree] and still be friends. ▪ The general opinion is that the players are paid too much. [=most people think that the players are paid too much] ▪ The company has been unsuccessful in its efforts to sway/change public opinion. [=to change what most people think] ▪ Contrary to popular opinion [=despite what many people think], fame does not always bring happiness. 2 [count] : advice from someone with special knowledge : advice from an expert
▪ We're still seeking medical opinions [=advice from doctors] on the cause of the pain. ▪ My doctor says I need surgery, but I'm going to get a second opinion. [=advice from a second doctor to make sure advice from the first doctor is correct] 3 [count] technical : a formal statement by a judge, court, etc., explaining the reasons a decision was made according to laws or rules
▪ The article discusses two recent Supreme Court opinions.
▪ We're still seeking medical opinions [=advice from doctors] on the cause of the pain. ▪ My doctor says I need surgery, but I'm going to get a second opinion. [=advice from a second doctor to make sure advice from the first doctor is correct]
▪ The article discusses two recent Supreme Court opinions.
be of the opinion
: to have a specifed opinion or belief
▪ They are of the opinion [=they think/believe] that the accident was caused by faulty wiring.
▪ They are of the opinion [=they think/believe] that the accident was caused by faulty wiring.
the court of public/world opinion — see 1court
