31st

Thân thiện

The calendar page shows the 31st of December.

Definition

1. Adjective:
   • Coming next after the thirtieth in position: Used to describe the ordinal number corresponding to the cardinal number thirty-one (31). It indicates the position of an item in a sequence.

Usage

• The adjective "31st" is used exclusively before a noun to specify its order in a series. It is the standard written and spoken form for "thirty-first."
• It is commonly used with dates, anniversaries, positions in competitions, and any other ranked lists.

Examples

• Adjective:
  • Her birthday is on the 31st of October. (It specifies the day's position in the month.)
  • He finished in 31st place in the marathon. (It indicates his ranking among the runners.)
  • This is the company's 31st annual conference. (It denotes the sequence of the event.)

Advanced Usage

• "the 31st" (as a nominal adjective): When the noun is implied or previously stated, "the 31st" can stand alone.
  • She arrived on the 30th, and he arrived on the 31st. (Here, "day" is implied.)
• In formal writing, it is often written with the suffix ("-st") as in "31st," but can be spelled out as "thirty-first."

Variants and Related Words

• Thirty-first: The written-out form of the ordinal number.
  • The thirty-first chapter is the most exciting.
• 31: The cardinal number (thirty-one), which denotes quantity rather than order.
  • There are 31 days in that month.

Synonyms

• Thirty-first: The literal synonym, used in more formal or prose contexts.

Notes

• "31st" follows the standard pattern for forming ordinal numbers ending in "1" (e.g., 1st, 21st, 31st, 101st). The suffix "-st" is used.
• It is incorrect to use "31st" as a noun by itself without "the" (e.g., "He was 31st" is incorrect; it must be "He was the 31st" or "He was in 31st place").

Học thuật

Adjective

1. coming next after the thirtieth in position

Từ đồng nghĩa

• thirty-first