Antonym
/ˈæntənɪm/
Definition 1 of 1
Pro Tip 1/3Contextual Use
Understand the context, as some antonyms can have different opposites based on the situation. 
The antonym of 'light' can be 'dark' or 'heavy' depending on the context.
Pro Tip 2/3Vocabulary Expansion
Knowing antonyms can double vocabulary as it teaches the opposites of known words. 
Learning 'antonym' helps you quickly double your word list by adding opposites.
Pro Tip 3/3Indirect Antonyms
Some antonyms are not exact opposites but have subtly different meanings or levels of intensity. 
'Sad' is an indirect antonym for 'happy' as is 'melancholic', depending on the intensity.