Computer Assisted Designs (CAD) is a term used to describe software applications that help in creating 2D or 3D designs. The antonyms, or words that have the opposite meaning of CAD, are traditional or manual design methods. Traditional design techniques involve paper, pencils, and rulers to create designs, which can be time-consuming and limited in terms of complexity. Another antonym for CAD is freehand drawing, which refers to creating designs without the use of any tools or computer software. While freehand drawing allows for a more artistic touch, it may not be suitable for technical or precise designs. Overall, CAD offers numerous benefits over its antonyms, including speed, accuracy, and the ability to simulate and test designs before they are manufactured.