rethinker


re·think

R0191500 (rē-thĭngk′)tr. & intr.v. re·thought (-thôt′), re·think·ing, re·thinks To reconsider (something) or to involve oneself in reconsideration.
re′think′ n.re·think′er n.

rethinker

(ˌriːˈθɪŋkə) na person who rethinks