謹啓

きんけい

Dear Sir or Madam, Dear Sirs, Gentlemen

略啓

りゃくけい

Forgive me for dispensing with the preliminaries, but I hasten to inform you that...

啓学

けいがく

Keigaku (publisher)

敬啓

けいけい

salutation at the end of a formal letter

啓蟄

けいちつ

"awakening of insects" solar term (approx. Mar. 6, the day on which hibernating insects are said to come out of the ground)

行啓

ぎょうけい

attendance (of the Empress)

天啓

てんけい

(divine) revelation, divine oracle

拝啓

はいけい

Dear (so and so), Dear Sir, Dear Madam, To Whom It May Concern

啓示

けいじ

revelation (i.e. divine revelation)

啓発

けいはつ

enlightenment, development, edification, public awareness, illumination, education, inspiration

還啓

かんけい

return to the palace (usu. of the empress, crown prince, etc.)

粛啓

しゅくけい しゅっけい

Dear (name)

復啓

ふくけい ふっけい

Dear Sir or Madam, in reply to your letter...

啓蒙

けいもう

enlightenment, instruction

急啓

きゅうけい

Dear Sir or Madam

啓迪

けいてき けいすすむ

edification, enlightenment, guide

啓く

ひらく けいく

to enlighten, to edify

啓上

けいじょう

speaking respectfully

追啓

ついけい

postscript, P.S., PS