Etymology

From em ‎(“younger sibling”) +‎ trai ‎(“boy”).

Pronunciation

• (Hà Nội) IPA^(key): [ʔɛm˧˧ ṯɕaːj˧˧]
• (Huế) IPA^(key): [ʔɛm˧˧ ʈaːj˧˧]
• (Hồ Chí Minh City) IPA^(key): [ʔɛm˧˥ ʈaːj˧˥]