<u>Antithetical</u>: something that represents opposition between two opposite or complementary terms.
Explanation:
The root <em>-anti </em>represents opposite. The origin of this word is Greek and means contrary.
Something antithetical means that it contains or uses antithesis. Let's see what this is about.
The antithesis represents two opposite or contrary terms. This term is typical of rhetoric and philosophy. It usually starts with expressions like "but", "however" or "on the contrary", which expose contrariety or difference.
Answer: Both Oliver and Noah come from a poor social background, but while Oliver's parentage is unknown, Noah's is known. Even though Noah is almost as poor as Oliver, he considers himself superior to Oliver.
