The antonyms for the word "unparallel" are "parallel," "matching," "equivalent," "comparable," "identical," and "similar." These antonyms indicate that the objects or concepts being compared are equal in some way, whether in shape, size, quality, or quantity. When two things are parallel, it means that they are consistent and running in the same direction. Matching and equivalent suggest that two things are of equal value or worth. Comparable means that two things can be compared because they share similar characteristics. Identical means that two things are exactly the same, while similar suggests that there are similarities between two objects. Overall, these antonyms demonstrate the diverse ways in which two objects or concepts can be compared and contrasted.