Some plague was working in the East and unchaining thousands.
Religion serves as a pretext for the unchaining of human passions.
Some of our men were unchaining one of our wagons and rolling it out of the way.
At last an unchaining, unbarring, unbolting, and key-turning were heard from within the door.
It was on the tip of his tongue to add, "and I haven't been yet—" but ...