thiệt

• (Hà Nội) IPA^(key): [tʰiət̚˧˨ʔ]
• (Huế) IPA^(key): [tʰiək̚˨˩ʔ]
• (Hồ Chí Minh City) IPA^(key): [tʰiək̚˨˩˨]

Sino-Vietnamese word from 實. Doublet of thực and thật.

thất thiệt is the only instance where this particular form has been adopted by all dialects.

thiệt

1. (Central Vietnam, Southern Vietnam, colloquial) real; true; factual

   Bữa nay gió ghê thiệt.

   It's real windy today, isn't it?

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

thiệt • (舌)

1. mistreatment; injustice

   Người chịu thiệt rốt cuộc vẫn là người tiêu dùng.

   In the end, the consumers are still the ones to be burned.