I believe that you left out:

Tolerant of views differing from one's own
Favoring reform or progress, as in religion, education, etc., specif. favoring political reforms tending toward democracy and personal freedom for the individual

Syn. liberal implies tolerance of others' views as well as open-mindedness to to ideas that challenge tradition, established institutions, etc.

Webster's New World College Dictionary, 3rd Edition, 1996

Please feel absolutely free to rant on.