Fabian \Fa"bi*an\, a. [L. Fabianus, Fabius, belonging to Fabius.] Of, pertaining to, or in the manner of, the Roman general, Quintus Fabius Maximus Verrucosus; cautious; dilatory; avoiding a decisive contest. {Fabian policy}, a policy like that of Fabius Maximus, who, by carefully avoiding decisive contests, foiled Hannibal, harassing his army by marches, countermarches, and ambuscades; a policy of delays and cautions.