Yes, marked is a Scrabble word!

Adjective

1. Strongly marked; easily noticeable

2. Singled out for notice or especially for a dire fate

3. Having or as if having an identifying mark or a mark as specified; often used in combination

Verb

1. Attach a tag or label to

2. Designate as if by a mark

3. Be a distinctive feature, attribute, or trait; sometimes in a very positive sense

4. Mark by some ceremony or observation

5. Make or leave a mark on

6. To accuse or condemn or openly or formally or brand as disgraceful

7. Notice or perceive

8. Mark with a scar

9. Make small marks into the surface of

10. Establish as the highest level or best performance

11. Make underscoring marks

12. Remove from a list

13. Put a check mark on or near or next to

14. Assign a grade or rank to, according to one's evaluation

15. Insert punctuation marks into