The word "de duct" refers to the action of subtracting or taking away. Its antonyms are addition, increase, and combine. Addition is the opposite of subtraction, and it refers to the introduction of something to an existing situation. Increase indicates the growth or rise in something, like the increase in temperature or a company's profits. To combine means to merge or mix two or more things together. These antonyms provide the opposite meaning to the word "de duct," and understanding them can help improve your vocabulary and communication skills. By learning the antonyms, you can accurately express your thoughts and ideas in various contexts.