unclench

[ uhn-klench ]

/ ʌnˈklɛntʃ /

to open or become opened from a clenched state.

Also un·clinch

[uhn-klinch] /ʌnˈklɪntʃ/.

Origin of unclench

First recorded in 1300–50, unclench is from the Middle English word unclenchen. See un-², clench

Which means the bosses in Tehran will have to unclench their fists and make some face-saving gestures back toward President Obama.

Hillary's Tricky Iran Game |Leslie H. Gelb |June 13, 2009 |DAILY BEAST
That was a brilliant line about how we will extend a hand to those who unclench their fists.

Grading the Obama Speech |Christopher Buckley |January 20, 2009 |DAILY BEAST
The phrase was "we will extend a hand if you are willing to unclench your fist"-to say that we will get along.

The Daily Beast D.C. Diary |The Daily Beast |January 19, 2009 |DAILY BEAST
My teeth were together so hard that I had to unclench them before I could answer, "As far away as we can get."

The Old Die Rich |Horace Leonard Gold

A second glance induced him to unclench his fists and reel round the corner on his way to a neighbouring grog-shop.

Dusty Diamonds Cut and Polished |R.M. Ballantyne
But his fists would clench and unclench as he stared up at the visi-screen.

Hawk Carse |Anthony Gilmore
Hurley subsided, somewhat, but his huge fists continued to clench and unclench as the boy talked.

Connie Morgan in the Lumber Camps |James B. Hendryx
He tries to draw it back, but it is clenched, and he has not the wisdom to unclench it.

Self-Help |Samuel Smiles