Definition of whiggish:
(adj) :
(politics, historical) Characteristic of a Whig; liberal.
(adj) :
(history, often capitalized) Characterized by a belief in inevitable progress, and tending to evaluate the past by the standards of the present; see Whig history.
(adj) :
Alternative letter-case form of whiggish. [(politics, historical) Characteristic of a Whig; liberal.]