Old English ongyrde, from un- (2) "opposite of" + gird (v.). Similar formation in Middle Dutch ontgorden, Old High German ingurten, German entgürten. Related: Ungirded; ungirding.
unfunny
unfurl
unfurnished
ungainly
ungentlemanly
ungird
unglue
ungodly
ungovernable
ungoverned
ungraceful