Definition from Wiktionary, the free dictionary
- Freedom from constraint.
1783, William Godwin, Four Early Pamphlets:
- It is calculated to inspire unconstraint and confidence into every breast.
1878, Mark Twain (Samuel Clemens), A Tramp Abroad:
- Nothing gives such an air of grace and elegance and unconstraint to a German or an English conversation as to scatter it full of "Also's" or "You knows."