CS Knowledge Base

Text style	Emoji style
4︎	4️
Text style is forced with ⟨︎⟩ and emoji style with ⟨️⟩.
4 U+0034, 4 DIGIT FOUR ← 3 [U+0033] Basic Latin 5 → [U+0035]

A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ४ (4)), a cursive form of four lines (to represent the number four) arranged in the shape of a cross (resembling +). See 4 § Evolution of the Hindu-Arabic digit for more.

4 (prev 3, next 5)

1. The cardinal number four.
2. A digit in the decimal system of numbering, and also in octal, and hexadecimal.
4. April.

   Comeronyms: 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12

5. (phonetics, often superscript) The pitch of a tone, either high or low depending on local convention (though not as high or low as 5, if '5' is also used).

   Synonyms: ˥, ˦, ˨, ˩, depending on other values

6. (phonetics, Sinosphere, often superscript) The tone number 4, typically identified with light rising yang shang (陽上). May be identified with entering ru tone (入) if the yin–yang distinction is not made.

   Synonyms: ꜃, ꜆

• Letter styles
• 
  Lining digit 4.
• 
  Oldstyle 4 in Fraktur script.

The following are equivalent forms as digits:

The following are only equivalent as representations of the cardinal number:

• (Arabic digits): 0 1 2 3 4 5 6 7 8 9

Other representations of 4:

Morse code: ····– Braille: ⠑

Signal flag (ICS and NATO):

Semaphore: After showing "numeric"

• As for.

• Audio (Australia):

  (file)

4

2. (text messaging, slang) Abbreviation of for.

   this is 4 U ― this is for you

   • 2012, Jessica Burkhart, Popular, Aladdin M!X, Simon & Schuster Children’s Publishing Division, →ISBN, page 147:

     “He wrote, ‘Hey, Laurbell! What’s up? How r u & ur roomie? Mom & I miss u x a zillion! We decided 2 turn ur room into storage 4 the antiques we r going 2 buy. Hope u r finding time 2 chillax. Give Wisp a hug. G2G. Write me back! Luv, Dad.’”

   • 2025 December 1, Catriona Innes, “I'm a party girl - could being hypnotised stop me from binge drinking?”, in Cosmopolitan‎^[1], archived from the original on 8 April 2026:

     Or, I’ll say yes to a cocktail after a pint and then have to give my cocktail away to someone else as I can’t drink it. Last night I said "go on" to a Happy Hour offer of 2-4-1 on cocktails and then had to throw the second one away.

• 2
• 8
• 4-gon
• 4-omino
• 6in4
• Camp 4
• figure 4
• V4
• Zone 4 Poblacion

⁴

Examples
-аар⁴ = -аар (-aar), -оор (-oor), -өөр (-öör) & -ээр (-eer)

1. (linguistics, superscript) Used after an isolated affix or clitic to indicate that it has four variant forms, dependent on the vowel harmony of the preceding stem or word.

This is usually used to indicate that an affix or clitic varies between using the unrounded back vowel ⟨а⟩, the rounded back vowel ⟨о⟩, the rounded front vowel ⟨ө⟩ and the unrounded front vowel ⟨э⟩.

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