Having accompaniment; being part of a group of at least two.

To go with or attend as a companion or associate; to keep company with; to go along with.

"Geoffrey accompanied the group on their pilgrimage."

To supplement with; add to.

To perform an accompanying part or parts in a composition.

To perform an accompanying part next to (another instrument or musician).

"I will accompany her on the oboe."

To associate in a company; to keep company.

To cohabit (with).

To cohabit with; to coexist with; occur with.

To be found at the same time.

"Thunder almost always accompanies lightning during a rain storm."