The more he drinks, the more loquacious he becomes.
loqui (to speak) (Latin)
garrulous, loquacious, verbose, voluble
loquacious: loq (speech, talk)+voracious. it is derived from the root word 'loqua'. which refers to SPEECH or TALK pickup 'lok' from this word which means people. Now think of Indian Lok Sabha where there are many loquacious politicians.