This is the 645th most frequent Thai word.
แก
A casual pronoun in Thai meaning "you" or "him/her," often used informally.
In this sentence, 'แก' is used informally to mean 'you,' commonly used among close friends.
แกเป็นเพื่อนที่ดีมาก
You are a very good friend.
Here, 'แก' again functions as 'you,' showing informality and a casual tone between the speaker and the listener.
ฉันให้แกอ่านก่อน
I let you read it first.
In this example, 'แก' is used to refer to an object or person in a diminutive or casual manner, dependent on context.