1. 不合礼节的：indecomposabilityindivisibilities 不可分性 | indecorous 不合礼节的 | indecorum 无礼的言行
2. 不得体的, 不合礼节的：semi-recumbent 半躺着的, 斜靠的 | indecorous不得体的, 不合礼节的 | anatomy 结构
3. 不雅的：rivet固定 | indecorous不雅的 | perplexity困惑混乱
4. 无礼的, 不合礼节的 (形)：indecisively 优柔寡断地 (副) | indecorous 无礼的, 不合礼节的 (形) | indecorously 不适当地; 无礼地 (副)
adj
1. lacking propriety and good taste in manners and conduct
e.g. indecorous behavior
Synonym: indelicate
2. not in keeping with accepted standards of what is right or proper in polite society
e.g. was buried with indecent haste
indecorous behavior
language unbecoming to a lady
unseemly to use profanity
moved to curb their untoward ribaldry