indecent

形容词 indecent:

1. not in keeping with accepted standards of what is right or proper in polite society
   同义词：indecorous, unbecoming, uncomely, unseemly, untoward
2. offensive to good taste especially in sexual matters
3. offending against sexual mores in conduct or appearance

1. Something, such as a word, an act, or an expression, that is indecent or lewd.
   猥亵的话不正经或淫猥的事物，如话语、行动或表情
2. It is indecent to say that.
   说那样的话是很不礼貌的。
3. A crudely indecent word or phrase; an obscenity.
   下流话粗俗下流的词或短语; 下流话

in.de.cent

adj.（形容词）
Offensive to good taste; unseemly.
没品味的; 不适当的：与好的品味相悖的；不合礼节的
Offensive to public moral values; immodest.See Synonyms at improper
无礼的; 猥亵的：冒犯公共道德价值观的；下流的参见 improper

【引伸】
inde.cently
adv.（副词）