まちまち
まちまち · machimachi · JLPT N1 · na-adj
various
区々 = 区 (section) doubled: things split into many separate sections, so various
The kanji 区 means a division or ward. Repeating it as 区々 suggests many separate parts, each one different, which gives the sense of 'various' or 'different'. It is usually written in kana as まちまち.