Supporting, reinforcing; (music) of or related to accompaniment
Standby, reserve or extra.
That is intended as a backup.
reinforcements
A copy of a file or record, stored separately from the original, that can be used to recover the original if it is destroyed or damaged.
A reserve or substitute.
An accumulation of material caused by a (partial) obstruction or (complete) blockage of the flow or movement of the material, or an accumulation of material that causes an overflow due to the flow being greater than the maximum possible flow.
of a title, by virtue of one's (living) spouse; often contrasted with regnant and dowager
To be in agreement.
To associate or keep company (with).
The spouse of a monarch.
A ship accompanying another.
Association or partnership.
A group or company, especially of musicians playing the same type of instrument.
A husband, wife, companion or partner.
An informal, usually well-publicized sexual companion of a monarch, aristocrat, celebrity, etc.