Accordion-pleated is a phrase used to describe a specific type of pleating technique that creates a zigzag effect in fabric. There are various words and terms you can use to signify the same meaning as an accordion pleated. Some of these synonyms include bellows pleated, concertina pleated, or fold-away pleated. You could also use words like gathered, ruffled, or crinkled to describe a similar pleating effect. Other similar phrases that can describe this type of pleating are fan pleated, zig-zagged, or layered pleats. Overall, there are many words and terms that you can use to describe accordion pleats, and each conveys the same concept of a fabric's zigzagged folds.