形容詞 impertinent:

1. characterized by a lightly pert and exuberant quality
   同義詞：irreverent, pert, saucy
2. not pertinent to the matter under consideration
   同義詞：extraneous, immaterial, orthogonal
3. improperly forward or bold
   同義詞：fresh, impudent, overbold, smart, saucy, sassy, wise

1. Characterized by offensive boldness; insolent or impertinent.
   輕率的，不慎的以無禮為特征的; 侮慢的或粗魯?shù)?/div>
2. I've had enough of your impertinent words.
   你說話太不禮貌了，我已受夠了。
3. His remarks were impertinent.
   他說話語言粗魯。

im.per.ti.nent

adj.（形容詞）
Exceeding the limits of propriety or good manners; improperly forward or bold:
無禮的：超越了禮貌和禮儀的界限的；不恰當(dāng)?shù)刈源蠡虼竽懙模?/br>例句：
impertinent of a child to lecture a grownup.
小孩教訓(xùn)大人是不禮貌的

Not pertinent; irrelevant.See Synonyms at irrelevant
不切題的；不中肯的參見 irrelevant

來源：
Middle English [irrelevant]
中古英語 [不切題的]
from Old French
源自 古法語
from Late Latin impertinôns impertinent-
源自 后期拉丁語 impertinôns impertinent-
Latin in- [not] * see in-
拉丁語 in- [不] *參見 in-
pertinôns [pertinent] * see pertinent
pertinôns [中肯的] *參見 pertinent

【引伸】
imper.tinently
adv.（副詞）