Yes, saying the opposite of what one means is known as sarcasm. It is a form of verbal irony where the intended meaning is different from the literal meaning of the words spoken.
Opposite speech is a linguistic phenomenon where a speaker's intended message is inverted or reversed, creating confusion or humor. It can involve saying the opposite of what one means, using contrasting words or phrases, or employing irony to convey a different meaning from what is actually expressed.
The opposite prefix of poly is "mono." It means single or one.
That would be verbal irony, where the speaker says the opposite of what they really mean for emphasis or humor. For example, saying "What a beautiful day" when it is actually raining.
The root "end" means the opposite of beginning.
The word "sedentary" is often used to describe the opposite of a nomad. It refers to a lifestyle or person who stays in one place or settled in one location.
Hypocrisy means saying one thing or holding a belief, and doing the opposite. The opposite of hypocrisy is honesty, straightforwardness, and sincerity.
The word irony means saying one thing while showing another. The word ironic means that something happens in the opposite way that it was expected.
Sarcasm
Dis means not, by saying disagree, it means to NOT agree.
This means the things that one does, the way one carries themself. Usually the decree will be specific, such as saying no overnight guests of the opposite sex.
One word that means the opposite of disgusting is attractive.
There is a saying that goes "can't see the forest for the trees". This saying, however, is the opposite of the question asked. It means that one may miss the big picture for focusing so intensely on the details of a situation.
Synonym means the same. Antonym means opposite.
When words are understood to mean the opposite of their literal meaning, this is sarcasm or irony.
Hyperactive means super active. Hypo active is the opposite.
mono means one, poly means many or more than one.
if the opposite you are saying is the inverse, then the answer is no.