loosen tongue

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Related to loosen tongue: loose tongue

loosen (one's) tongue

To cause one to speak uninhibitedly. Often refers to the effect of alcohol. A few drinks will loosen her tongue, and then I'm sure she'll tell me the secret without me even having to ask. I've never met a reporter like Courtney. She can loosen the tongue of even the cagiest politician.
See also: loosen, tongue

loosen (someone's) tongue

To cause (someone) to speak freely or carelessly or to divulge information.
See also: loosen, tongue
References in periodicals archive ?
I suspect that not even Long Island's entire annual production of Ice Tea is going to loosen tongues this time.
ATUTOR has started Welsh classes in a pub, saying there is nothing like alcohol to loosen tongues.
Gombrich once wrote that he hoped to "open eyes, not loosen tongues.
Drink does loosen tongues, as well as inhibitions, but they tighten up again when the effects of the booze wear off.