1
: having the highest possible classification
used of a ship
2
: of the finest quality : first-rate

Examples of A1 in a Sentence

The car's in A1 condition. an A1 mom deserves only the very best Mother's Day card

Word History

First Known Use

1801, in the meaning defined at sense 1

Time Traveler
The first known use of A1 was in 1801

Dictionary Entries Near A1

Cite this Entry

“A1.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/A1. Accessed 19 Mar. 2024.

Kids Definition

A1

adjective
: of the very best kind
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!