Wiktionary
unrelaxed
a. Not relaxed
WordNet
unrelaxed
adj. nor relaxed; "his life was drawing to a close in baffled zeal and unrelaxed strain"- U.B.Phillips
Usage examples of "unrelaxed".
Surely, you have enough experience now with the nature of the nervous system to realize that an unrelaxed man is at a terrible disadvantage.
Away from mountaineering, it gave her, at times, an unrelaxed look, a jumpiness.