grainedyoudaoicibaDictYouDict
in compounds, "having grains" (of a specified kind), 1520s; see grain (n.).
hare-brained (adj.)youdaoicibaDictYouDict
also harebrained, 1540s, from hare-brain "giddy or reckless person" (1540s), probably from hare (n.), on notion of "flighty, skittish."
restrained (adj.)youdaoicibaDictYouDict
"repressed, kept under control," 1570s, past participle adjective from restrain.
unconstrained (adj.)youdaoicibaDictYouDict
1640s, from un- (1) "not" + past participle of constrain (v.). Related: Unconstrainedly.
unrestrained (adj.)youdaoicibaDictYouDict
1580s, from un- (1) "not" + past participle of restrain (v.). Related: Unrestrainedly.
untrained (adj.)youdaoicibaDictYouDict
1540s, from un- (1) "not" + past participle of train (v.).