便 函 biàn hán : an informal letter sent by an organization

不 折 不 扣 bù zhé bù kòu : a hundred per cent; to the letter; out-and-out

大 寫 dà xiě : capital letters; block letters

復 [复] «覆» fù : again; recover; reply to a letter; to repeat; to duplicate

Big5: , Unicode: 5fa9 (復),
Links: MT, Cantonese, Ld, Chinese Language

覆 [复] «復» fù : cover; overflow; to reply to a letter

Big5: , Unicode: 8986 (覆),
Links: MT, Cantonese, Ld, Chinese Language

掛 號 guà hào : to register (a letter, etc.)

函 «凾» hán : envelope; case; letter

Big5: , Unicode: 51fd (函),
Links: MT, Cantonese, Ld, Chinese Language

函 件 hán jiàn : letters; correspondence

箋 [笺] «牋» jiān : letter; note-paper

Big5: , Unicode: 7b8b (箋),
Links: MT, Cantonese, Ld, Chinese Language

緘 [缄] jiān : letters; to close; seal

Big5: , Unicode: 7dd8 (緘),
Links: MT, Cantonese, Ld, Chinese Language

牋 «箋» jiān : letter; note-paper

Big5: , Unicode: 724b (牋),
Links: MT, Cantonese, Ld, Chinese Language

椷 jiān : a box; letters

Big5: , Unicode: 6937 (椷),
Links: MT, Cantonese, Ld, Chinese Language

柬 jiǎn : card; note; letter

Big5: , Unicode: 67ec (柬),
Links: MT, Cantonese, Ld, Chinese Language

敬 祝 jìng zhù : to respectfully offer (written at the end of letter from someone of lower status to higher status)

羅 馬 字 母 luó má zì mǔ : Roman letters; Roman alphabet

親 愛 qīn ài : dear ... (way of starting a letter)

書 [书] shū : book; letter

Big5: , Unicode: 66f8 (書),
Links: MT, Cantonese, Ld, Chinese Language

推 薦 信 tuī jiàn xìn : recommendation letter

文 學 家 wén xué jiā : writer; man of letters

西 裡 爾 字 母 xī lǐ ěr zì mǔ : Cyrillic alphabet; Cyrillic letters

小 寫 字 母 xiǎo xiě zì mǔ : lowercase (letters)

寫 信 xiě xìn : to write a letter

信 «伩» xìn : letter; true; to believe; sign; evidence

Big5: , Unicode: 4fe1 (信),
Links: MT, Cantonese, Ld, Chinese Language

信 件 xìn jiàn : a letter (i.e. sent in the mail)

信 用 證 xìn yòng zhèng : letter of credit

致 函 zhì hán : send a letter

字 zì : letter; symbol; character; word

Big5: , Unicode: 5b57 (字),
Links: MT, Cantonese, Ld, Chinese Language

字 母 zì mǔ : letter (of the alphabet)