Dearer

adjective

1. High in price; expensive.

   "The dearer the jewel, the greater the love expressed."

2. Loved; lovable.
3. Loving, affectionate, heartfelt

   "Such dear embrace tenderly comforts even in this dear sorrow."

4. Precious to or greatly valued by someone.

   "The dearer the giver, the dearer the trinket he brings!"

5. A formal way to start (possibly after my) addressing somebody at the beginning of a letter, memo etc.

   "Dear Sir/Madam/Miss, please notice our offices will be closed during the following bank holidays: [...]."