Noob
Amateur or con
Pro is short for Professional. Pro is the opposite of Noob.
Pro
The opposite of abolitionists would be slaveholders, or those who were pro-slavery.
The opposite of anti catholic
Gratuitus is the opposite of 'quid pro quo'. The phrase 'quid pro quo' means 'that for which' or 'which for which'. It therefore means getting something for doing something else. In contrast, 'gratuitus' means 'for free'.
The opposite of "anti" is "pro." While "anti" denotes opposition or resistance to something, "pro" signifies support or advocacy for it. For example, "anti-war" implies opposition to war, whereas "pro-war" indicates support for it.
The joke is that, since pro- is opposite of con-, congress is the opposite of progress. Except for this, there is no antonym.
Pro-choice in modern terminology. Anti-life or pro-death if you take it literally
Anti..... if you are pro something & I disagree with you.. I am anti your idea.
Construct
A congressman. It is memorable because CON is the opposite of PRO, and some feel congress is the opposite of progress.
It is Fore e.g I am against them or I am Fore them.