Definition

1. Adjective:

   • Exceeding the required or desired number; extra: Describes something or someone that is more than what is needed, desired, or normally present.
   • Superfluous; redundant: Describes something that is unnecessary because it is more than sufficient or duplicates something else.

2. Noun:

   • A person or thing that is extra or beyond the usual number: Someone or something that is present in excess of the normal, required, or standard amount.
   • A minor actor with no speaking lines, used in crowd scenes: In theater or film, a person who appears in a non-speaking, background role to add atmosphere.
   • A person who serves no apparent or essential function: An individual whose presence or role is considered unnecessary or redundant.

Usage Examples

• Adjective:
  • The report contained supernumerary details that distracted from the main argument.
  • After the merger, several positions became supernumerary and were eliminated.
• Noun:
  • He worked as a supernumerary in several historical films, appearing in crowd scenes.
  • The committee considered him a supernumerary because his expertise overlapped completely with another member's.

Advanced Usage

• In a biological/medical context: Refers to an extra or additional body part beyond the normal number.
  • The X-ray revealed a supernumerary tooth, which explained the patient's dental crowding.
• In a formal or organizational context: Describes personnel or items in excess of establishment.
  • The budget cuts forced the department to identify supernumerary staff.

Variants and Related Words

• Supernumerary can function as both an adjective and a noun without changing form.
• Supernumeracy (n., rare): The state or condition of being supernumerary.
• Supernumerarily (adv., rare): In a supernumerary manner.

Synonyms

• Adjective: Extra, surplus, superfluous, redundant, excess, spare, additional, unnecessary.
• Noun: Extra, spare, super, (theater) extra, walk-on, nonentity.

Antonyms

• Adjective: Essential, necessary, integral, required, indispensable.
• Noun: Essential, key player, principal, lead.

Related Phrases/Idioms

• "To be deemed supernumerary": To be officially considered surplus to requirements.
  • Following the audit, three roles were deemed supernumerary.
• "Supernumerary to establishment": A formal phrase indicating someone is an extra post not included in the official staffing structure.

Adjective

1. more than is needed, desired, or required
   • trying to lose excess weight
   • found some extra change lying on the dresser
   • yet another book on heraldry might be thought redundant
   • skills made redundant by technological advance
   • sleeping in the spare room
   • supernumerary ornamentation
   • it was supererogatory of her to gloat
   • delete superfluous (or unnecessary) words
   • extra ribs as well as other supernumerary internal parts
   • surplus cheese distributed to the needy

Noun

1. a minor actor in crowd scenes
2. a person serving no apparent function
   • reducing staff is difficult because our employees include no supernumeraries