guileful的音標為[?ɡa?lf(?)l] ，意思是欺詐的。

速記技巧：使用元音字母i代替guile，輔音字母f和l保持原音。

Guileful這個詞的詞源可以追溯到古英語，它來自于詞根“guile”和后綴“-ful”，表示“狡猾的”或“欺騙的”。這個詞的變化形式包括加前綴“un-”形成的“unguileful”，表示“不狡猾的”或“不欺騙的”。

相關單詞：

1. Deceive（欺騙）：這個詞直接來源于“de-”，表示“分離”或“否定”，加上guileful的組合，表示“欺騙”的行為。

2. Cheat（欺騙）：這個詞也是由詞根“cheat”和后綴“-ing”組成，表示“欺騙”或“欺詐”的行為。

3. Trick（詭計）：這個詞來自于古英語中的“tricca”，意為“詭計”或“欺詐”，后來演變為現代英語中的“trick”。

4. Cunning（狡猾）：這個詞來自于古英語中的“cunnung”，意為“狡猾”或“機巧”，現在通常用cunningly來修飾行為。

5. Crafty（熟練的）：這個詞來自于古英語中的“craft”，意為“技能”或“技巧”，加上后綴-y，表示熟練的、有技巧的。

6. Unsophisticated（不成熟的）：這個詞由un-和sophisticated組成，sophisticated意為“復雜的”，“不成熟的”則表示缺乏經驗或技巧。

7. Unsuspecting（無懷疑的）：這個詞由un-和suspecting組成，表示對他人意圖沒有懷疑的。

8. Practiced（熟練的）：這個詞來自于古英語中的“practica”，意為“練習”或“實踐”，加上后綴-ed，表示熟練的、有經驗的。

9. Artful（巧妙的）：這個詞來自于古英語中的“art”，意為“藝術”或“技能”，加上后綴-ful，表示巧妙、機智的。

10. Wily（狡猾的）：這個詞直接來自于古英語中的wile，意為“詭計”或“欺騙”，現在通常用wily來修飾人或行為。

以上單詞都與guileful有著密切的聯系，描述了各種與欺騙、狡猾、機巧、熟練等相關的行為和狀態。

常用短語：

1. go guileless

2. be guileless

3. have a guileless nature

4. lack guile

5. be cunning

6. scheme

7. be crafty

例句：

1. He is always guileless and trusting, never suspecting others of being untrustworthy.

2. She lacks guile and always speaks her mind, which can sometimes get her into trouble.

3. He is a cunning schemer who always thinks of ways to get what he wants.

4. They were caught in a cunning scheme that they knew nothing about.

5. Be careful not to let your guileless nature be taken advantage of by others.

6. He is crafty and always manages to get what he wants without being detected.

7. She is a guileless girl who always speaks her heart and is loved by everyone.

英文小作文：

Guileless people are often seen as naive and easily taken advantage of, but I believe that there is something beautiful about being honest and straightforward. I think that we should all try to be more guileless and less cunning in our daily lives, because it will help us to be happier and healthier.

In my opinion, being guileless means being honest and open with others, not hiding anything from them or trying to deceive them. It also means being able to trust others and not being afraid to be hurt or disappointed by them. Although it may be difficult at times, I believe that being guileless is a good way to live life to the fullest and enjoy every moment of it.