泝

variant of 溯[su4]

to blame / to reprove / to reprimand / to expel / to oust / to reconnoiter / (of territory) to expand / saline marsh

"water" radical in Chinese characters (Kangxi radical 85), occurring in 沒|没[mei2], 法[fa3], 流[liu2] etc / see also 三點水|三点水[san1 dian3 shui3]