Yes, dear is in the scrabble dictionary

Dear Definition

noun

An endearing, lovable, or kind person.

One that is greatly loved.

A loved one .

A lovable person.

adverb

At a high cost: sold their wares dear.

With fondness; affectionately.

adjective

Charging high prices.

Earnest; ardent: "This good man was a dear lover and constant practicer of angling” ( Izaak Walton).

Greatly valued; precious: lost everything dear to them.

Heartfelt: It is my dearest wish.

High-priced; expensive.

interjection

Used as a polite exclamation, chiefly of surprise or distress: oh dear; dear me.