liberalize

verb

to make liberal or more liberal

Wiktionary

Pronunciation: /ˈlɪbəɹəlaɪz/

verb

Etymology: Etymology tree English liberal Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō)bor. Late Latin -izōder. Middle French -iserbor. Middle English -isen English -ize English liberalize From liberal + -ize.

to make liberal, free.
to become liberal, free.