extra

Added to a regular schedule.

Further or added.

“need extra help”

“an extra pair of shoes”

More than is needed, desired, or required.

“found some extra change lying on the dresser”

“extra ribs as well as other supernumerary internal parts”

A minor actor in crowd scenes.

Something additional of the same kind.

“he always carried extras in case of an emergency”

An additional edition of a newspaper (usually to report a crisis).