Which word have a mile long from first letter to last letter

Which word have a mile long from first letter to last letter It's a long and difficult word.I have forgotten which letter From A to Z,which letter is not me?英译汉 两个英语谜语,I am a word .i have three letters .my first letter is Hello!I'm a word.I have three letters.My first letter is in 的谜底Hello!I'm a word.I have three letters.My first letter is Hello!I’m a word.I have three letters.My first letter is in 英语翻译Hello!I’m a word .I have three letters.My first letter i a letter to 和a letter from之间的区别? Jack works a long way from home.He wants to send a letter to Find a three-letter word which can be added to the letters i have you taken a letter from him