A one
A a


    • US Pronunciation
    • US IPA
    • [ey wuhn]
    • /ˈeɪ ˈwʌn/
    • US Pronunciation
    • US IPA
    • [ey wuhn]
    • /ˈeɪ ˈwʌn/

Definitions of a1 word

  • adjective a1 in good health; physically fit 3
  • adjective a1 first-class; excellent 3
  • adjective a1 (of a vessel) with hull and equipment in first-class condition 3
  • adjective a1 noting a vessel regarded by a shipping-classification society as being equipped to the highest standard and with equipment maintained in first-class condition. 1
  • adjective a1 Also, A number one. Informal. first-class; excellent; superior: The meals there are A one. 1
  • noun Definition of a1 in Technology (language)   Address 1 code. An a1 code interpreter, by Matthew Newhook <[email protected]> was used to test compiler output. It requires gcc 2.4.2 or higher and is portable to computers with memory segment protection. 1

Information block about the term

Origin of a1

First appearance:

before 1830
One of the 36% newest English words
First recorded in 1830-40

Historical Comparancy

Parts of speech for A1


a1 popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 54% of English native speakers know the meaning and use word.
Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

a1 usage trend in Literature

This diagram is provided by Google Ngram Viewer

Synonyms for a1

adj a1

  • ace — An ace is a playing card with a single symbol on it. In most card games, the ace of a particular suit has either the highest or the lowest value of the cards in that suit.
  • best — Best is the superlative of good.
  • capital — Capital is a large sum of money which you use to start a business, or which you invest in order to make more money.
  • choice — If there is a choice of things, there are several of them and you can choose the one you want.
  • flawless — having no defects or faults, especially none that diminish the value of something: a flawless Ming Dynasty vase.

Antonyms for a1

adj a1

  • least — small in size; not big; not large; tiny: a little desk in the corner of the room.
  • worst — in ill health; sick: He felt badly.
  • unimportant — of much or great significance or consequence: an important event in world history.
  • unworthy — not worthy; lacking worth or excellence.
  • imperfect — not perfect; lacking completeness: imperfect knowledge.

Top questions with a1

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See also

Matching words

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