เด็กชาย

From เด็ก (dèk, “child”) +‎ ชาย (chaai, “male”).

เด็กชาย • (dèk-chaai)

1. boy.
2. (law) a formal title which a man under 15 years of age is required to use. Abbreviation: ด.ช. (dɔɔ-chɔɔ)
3. similar title, as master, etc.

• A man over 15 years of age is required to use the title นาย (naai).
• A woman under 15 years of age is required to use the title เด็กหญิง (dèk-yǐng), and that over 15 years of age is required to use the title นางสาว (naang-sǎao). A married woman, irrespective of the age, is required to use either นางสาว (naang-sǎao) or นาง (naang).