갈아입어요 · 갈아입었어요 · 갈아입을 거예요 · 갈아입으세요
to change (clothes)
Example
운동하기 전에 편한 옷으로 갈아입으세요.
Change into comfortable clothes before you work out.
Word parts
갈다 (to replace) + 입다 (to wear).
Good to know
Pattern: 옷으로 갈아입다 = change into clothes; same 갈아- as 갈아타다 'to transfer'.