- Informed, well-informed, familiar, acquainted
- Side by side, with breasts in a line; as,
Etymology: Prefix a- + breast
- Two men could hardly walk . - Macaulay
- (nautical) Side by side; also, opposite; over against; on a line with the vessel's beam; -- with of.
- Up to a certain level or line; equally advanced; as, to keep of or with the present state of science.
- (obsolete): At the same time; simultaneously
- Abreast therewith began a convocation. - Fuller
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Full Definition of abreast