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The Collaborative International Dictionary
Superserviceable

Superserviceable \Su`per*serv"ice*a*ble\, a. Overofficious; doing more than is required or desired. ``A superserviceable, finical rogue.''
--Shak.

Wiktionary
superserviceable

a. (context nonce English) overofficious; doing more than is required or desired.

Usage examples of "superserviceable".

This enlightened body promptly shortened the days of tribulation by a letter to the superserviceable Stuyvesant, conceived in a most commercial spirit.