Is swoop an onomatopoeia word

Yes, "swoop" is considered an onomatopoeic Word because it imitates the sound of a swift, sweeping motion. Onomatopoeia is a linguistic device where a Word resembles the sound it represents, such as "buzz" or "hiss." In the case of "swoop," the Word itself evokes the image and sound of something moving quickly and smoothly through the air.