The word "un-reflective" refers to a person who does not think deeply or deeply about things. Some antonyms for "un-reflective" are thoughtful, introspective, and contemplative. These words describe individuals who take the time to ponder their actions and decisions, considering the consequences carefully before acting. A thoughtful person is one who is considerate and empathetic, taking other people's feelings into account when making decisions. An introspective person is one who is inclined to look inwardly at their own thoughts and emotions. A contemplative person is one who thinks deeply and seriously about important matters, often taking a long time to reach a conclusion. By contrast, a person who is un-reflective is careless, reckless, and impulsive.