Wiktionary
adv. In an unconstrained manner.
Usage examples of "unconstrainedly".
The correspondence between George and his guardian had not ceased by any means: William had even written once or twice to her since his departure, but in a manner so unconstrainedly cold, that the poor woman felt now in her turn that she had lost her power over him, and that, as he had said, he was free.
Set free by their absence from the intolerable necessity of accounting for her grief or of beholding their frightened wonder, she could live unconstrainedly with the sorrow that was every day streaking her hair with whiteness and making her eyelids languid.
Thus much he told me good-humoredly and unconstrainedly while I was preparing my drawing materials.
In return, he talked to them as easily and unconstrainedly as if they were his equals.
He was never allowed out without his nurse, and seldom had a chance to play unconstrainedly with other children.