Definition

Number: The cardinal number equivalent to eight times ten; 80.

Usage

This word is used to express the quantity or count of eighty items, years, etc. It functions as a numeral in Vietnamese.

Examples

• (My grandmother is eighty years old this year.)
• (There are eighty students in the auditorium.)
• (He paid eighty thousand dong for the book.)

Advanced Usage

• Ordinal Number: To form the ordinal number "eightieth," combine with the word "thứ": thứ tám mươi.
  • Đây là thứ tám mươi lần tôi giải thích điều này. (This is the eightieth time I've explained this.)
• Approximation: Often used with "khoảng" (approximately) or "độ" (about) to indicate an approximate age or quantity.
  • Cụ ông ấy trông khoảng tám mươi. (That old man looks about eighty.)

Variants and Related Words

• Tám chục: A colloquial synonym for "eighty," literally meaning "eight tens." It is commonly used in spoken Vietnamese.
  • Tôi mua tám chục quả trứng. (I bought eighty eggs.)

Synonyms

• Bát thập: (八 十) The Sino-Vietnamese term, primarily used in formal, literary, or historical contexts.
  • triều đại bát thập năm (an eighty-year dynasty)

number

1. eighty