Of, relating to, or supporting possibilism.
A supporter or advocate of policies aiming to bring about immediately practicable or feasible reforms; a pragmatic reformer.
Now chiefly historical, with reference to French socialist or Spanish republican parties of reform in the latter part of the 19th century.
A person who emphasizes human freedom of action in shaping the environment rather than the limitations imposed by the natural world.
Late 19th century; earliest use found in The Daily News. Probably partly from French possibiliste, and partly from Spanish posibilista, noun and adjective.