What's the adjective for Fabian? Here's the word you're looking for.
Fabian
Pertaining to or reminiscent of Roman general Fabius Maximus, whose tactics against Hannibal during the Second Punic War famously consisted of delaying or avoiding combat, focusing instead on weakening the enemy by cutting off supply lines.
Advocating that social reforms be reached through a series of gradual and moderate stages rather than sudden revolution; specifically, relating to the Fabian Society, a British socialist society advocating reformistsocialism.