De-compounds refer to the process of breaking down compounds into simpler form. The antonyms for this word can be "combine," "join," or "create." When we combine two or more ingredients or substances to make a complex structure, we are creating compounds. The opposite of de-compounding would be to join or combine various elements together to produce a compound. For example, when we make a cake, we combine flour, sugar, eggs, and milk to create a mixture that is then baked to make a delicious dessert. Therefore, the antonyms for de-compounds are as significant as the word itself, as they represent the opposite action of breaking things down.