Answer:
Pairs of words opposite in meaning
Explanation:
Indifferent and interested, and bored and fascinated are examples of antonyms. Antonyms are words that have opposite meanings. The relation between antonyms is called antonymy, which is the complete opposite of synonymy - the relation between words from the same language that have similar or identical meanings (synonyms). We could say that an antonym of the word antonymy is synonymy.
More examples of antonyms are:
Likely - unlikely
Expensive - cheap
Happy - sad
