English definition of “dear”
IN LETTERS › used at the beginning of a letter, before the name of the person you are writing to: Dear Amy Dear Mrs Simpson Dear Sir/Madam
LIKED [always before noun] › A dear person is someone who you know and like very much: my dear Peter He's one of my dearest friends.
EXPENSIVE UK › expensive: I wouldn't buy anything there, it's far too dear.
dear to sb/sb's heart › If something is dear to someone or dear to their heart, it is very important to them: The charity was very dear to his heart.