Yes, my is in the scrabble dictionary

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My Definition

determiner

Belonging to or associated with the speaker.
from Free Scrabble Dictionary
Used in various expressions of surprise.
from Free Scrabble Dictionary

residual

Motor yacht.
from Free Scrabble Dictionary

adjective

Used as a modifier before a noun: my boots; my accomplishments.
from The American Heritage Dictionary of the English Language, 4th Edition
Used in various interjectional phrases: My word! My goodness!.
from The American Heritage Dictionary of the English Language, 4th Edition
Used preceding various forms of polite, affectionate, or familiar address: My friend, you are so right.
from The American Heritage Dictionary of the English Language, 4th Edition
Of or relating to me or myself especially as possessor, agent, object of an action, or familiar person.
from Free Scrabble Dictionary

interjection

Used as an exclamation of surprise, pleasure, or dismay: Oh, my! What a tiring day!.
from The American Heritage Dictionary of the English Language, 4th Edition

abbreviation

Million years.
from Free Scrabble Dictionary

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Top Words by points

Points

my

7

2 letter words with MY

Points

my

7

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