xi1
(particle in old Chinese similar to 啊)

strokes 4
radical
strokes after radical 2
可怜兮兮 可憐兮兮 ke3 lian2 xi1 xi1
miserable; wretched

兮兮 兮兮 xi1 xi1
(particle used to exaggerate certain adjectives, in particular 神經兮兮|神经兮兮, 髒兮兮|脏兮兮, 可憐兮兮|可怜兮兮, and 慘兮兮|惨兮兮)

脏兮兮 髒兮兮 zang1 xi1 xi1
dirty; filthy