The Collaborative International Dictionary
Unstrain \Un*strain"\, v. t. [1st pref. un- + strain.]
To relieve from a strain; to relax.
--B. Jonson.
WordNet
Usage examples of "unstrain".
Exquisite melodies, limpid and unstrained as the carol of a bird in Spring-time, and as plaintive as the cooing of a turtle-dove seems as natural products of the Scottish Highlands as the gorse which blazons on their hillsides in August.
More than that, they could bring themselves to associate with that same skeleton on terms of unstrained equality.
Her voice was unstrained, as though she were used to a brisk morning jaunt.
In his mind now his mother was alive, young, dancing in an open room, with an unstrained integrity and untroubled freedom that had been achieved, of course, by pure artifice and repetition.
For now the overtense nerves are all unstraining themselves, and a buzz, like that which comes over one who stops after being long jolted upon an uneasy pavement, makes the whole frame alive with a luxurious languid sense of all its inmost fibres.