Definition of over-officiousness in US English:

over-officiousness

noun

  • The quality of being over-officious; (also occasionally) an instance of this.

Origin

Early 17th century; earliest use found in John Healey (c1585–c1616), translator. From over- + officiousness.

Pronunciation

over-officiousness

/ˌəʊv(ə)rəˈfɪʃəsnəs/