One-letter English word

• a -- the indefinite article
• I -- the first person singular nominative pronoun
• O -- an interjection used in poetry

Both I and O are capitalized when used.

The word E is the shortest English neologism and is a Spivak pronoun meaning he or she. It is also a common abbreviation for the drug Ecstasy.

e is a mathematical and scientific constant, referring to the base of the natural logarithm.

In gangster rap culture, G is a valid word, a contraction of "gangster", used as a term of respect.

There are also various single letter words used as abbreviations in text-speak and related uses:

• b -- "be"
• c -- "see"
• k -- "okay"
• q -- "queue"
• r -- "are"
• t -- "tea"
• u -- "you"
• v -- "very", for example: V Graham Norton[?]
• y -- "why"

Various digits have also been pressed into service in this manner:

• 2 -- "to", "too"
• 4 -- "for"
• 8 -- "ate"

See also

• Longest word in the English language
• Two-letter English word