WordNet sense 1 (a person who favors a political philosophy of progress and reform and the protection of civil liberties):

liberalist

WordNet sense 2 (of or belonging to the political or intellectual left):

left

WordNet sense 3 (given or giving freely):

big, bighearted, bounteous, bountiful, giving, handsome, openhanded, freehanded

WordNet sense 4 (willing to give and share unstintingly):

generous

WordNet sense 5 (not literal):

free, loose

WordNet sense 6 (not exact):

inexact

WordNet sense 7 (favoring or promoting reform (often by government action)):

progressive

WordNet sense 8 (having or demonstrating belief in the essential goodness of man and the autonomy of the individual; favoring civil and political liberties, government by law with the consent of the governed, and protection from arbitrary authority):

liberalistic

WordNet sense 9 (showing or characterized by broad-mindedness):

broad, tolerant, large-minded

WordNet sense 10 (inclined to respect views and beliefs that differ from your own):

broad-minded