| Word | Definitions | Synonyms |
|---|---|---|
| aboard | (adverb) on first or second or third base | - |
| (adverb) on a ship, train, plane or other vehicle | Synonyms: on board | |
| (adverb) part of a group | - | |
| (adverb) side by side | Synonyms: alongside | |
| aboveboard | (adverb) in an honest manner | Synonyms: honestly |
| overboard | (adverb) from on board a vessel into the water | - |
| (adverb) to extremes | - |