This is the 401st most frequent Thai word.
อน
The Thai word "อน" means "moment," "instance," or "short period."
In this sentence, 'อ่าน' means 'to read', which indicates an action.
เขาอ่านหนังสือทุกวัน
He reads books every day.
Here, 'อนุญาต' means 'to permit', where 'อน' is a prefix denoting permission or approval.
โปรดอนุญาตให้เขาเข้าไป
Please grant him permission to enter.
In this usage, 'อน' is used in the context of progressing or moving forward slightly.