The Collaborative International Dictionary
Liberalize \Lib"er*al*ize\ (l[i^]b"[~e]r*al*[imac]z), v. t. [imp. & p. p. Liberalized (-[imac]zd); p. pr. & vb. n. Liberalizing (-[imac]`z[i^]ng).] [Cf. F. lib['e]raliser.] To make liberal; to free from narrow views or prejudices; to make less strict.
To open and to liberalize the mind.
--Burke.
Wiktionary
vb. (present participle of liberalize English)
Wikipedia
Usage examples of "liberalizing".
Indeed, the Saudis have been liberalizing their trade relations with Iraq to the point that the Kingdom's trade with Iraq is now estimated at $1 billion per year, and the Saudis have allowed Baghdad to accredit an ambassador to the Organization of the Islamic Conference, which has its permanent home in Jeddah, Saudi Arabia.
Every nation indeed, on the continent of Europe, belligerent as well as neutral, is interested in maintaining these rights, in liberalizing them progressively with the progress of science and refinement of morality, and in relieving them from restrictions which the extension of the arts has long since rendered unreasonable and vexatious.
The signs are, that the next twenty years will bring about some noteworthy changes in the Valley, in the direction of increased population and wealth, and in the intellectual advancement and the liberalizing of opinion which go naturally with these.