contrary

UK: ˈkɒntrəri | US: ˈkɑːntreri

Definition
  1. adj. opposite in nature, direction, or meaning

  2. adj. perversely inclined to disagree or oppose

  3. n. the opposite

Structure
contra <against>ary <adjective suffix>
Etymology

Derived from Latin contrarius (opposite, opposed), from contra (against). The morpheme contra appears in many English words (e.g., contradict, contrast) and retains its core meaning of opposition. The suffix -ary (from Latin -arius) forms adjectives indicating relation or belonging. Over time, contrary evolved to describe both literal opposition (e.g., "contrary winds") and stubborn disagreement (e.g., "a contrary child").

Examples
  1. The results were contrary to our expectations.

  2. She has a contrary habit of arguing even when she agrees.

  3. The boat struggled against the contrary currents.

  4. His actions run contrary to his words.

  5. "Hot" and "cold" are contrary terms.