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Synonyms

A1

British  
/ ˈeɪˈwʌn /

adjective

  1. in good health; physically fit

  2. informal first class; excellent

  3. (of a vessel) with hull and equipment in first-class condition

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

He created the Defence AI Center A1 -- a hub dedicated to embedding AI in the military and using live feedback from the front to speed up the deployment of new technology.

From Barron's ● Aug. 7, 2026

The A46 project also includes a new flyover at the Cattle Market junction, a new bridge over the A1 and the widening of roundabouts at Farndon and Winthorpe.

From BBC ● Jun. 30, 2026

Moody’s has assigned an A1 rating to the proposed U.S. dollar and yuan medium-term notes.

From The Wall Street Journal ● Jun. 8, 2026

"Jet A1 fuel is sourced via a major UK/global supplier from a diverse range of countries, helping maintain a dependable and resilient supply chain," they said.

From BBC ● Apr. 3, 2026

Yeah, she could put the top up, but that combination of cold night air and warmth from the heater is A1.

From "On the Come Up" by Angie Thomas

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