أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
An antiphrasis is a word or group of words used in place of their antonyms; I think such use is usually intended to be rude or funny.
I found examples on the Internet, such as referring to a big-muscled man as "tiny."
source:
http://www.softschools.com/examples/literary_terms/antiphrasis_examples//
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An oxymoron is a phrase with two words with opposite meanings.
I found examples on the Internet:
http://examples.yourdictionary.com/examples-of-oxymorons.html
Antiphrasis : This giant of3 feet4 inches (Merriam Webster Dictionary)
Oxymoron: Standard deviation
Oxymora might seem stupid or nonsensical on the surface, but they carry a subtler meaning when examined in depth.