adjective
- not decorous; violating generally accepted standards of good taste or propriety; unseemly.
adjective
- improper or ungraceful; unseemly
1670s, from Latin indecorus “unbecoming, unseemly, unsightly,” from in- “not, opposite of, without” (see in- (1)) + decorus “becoming, fitting, seemly, proper” (see decorous). Related: Indecorously; indecorousness.