From over- + Anglo-Norman plus, Middle French plus.
overplus (countable and uncountable, plural overpluses or overplusses)
- That which remains beyond what is necessary or required; a surplus.
- Where some for an over-plus, or supererogation have added this necessaity, that they must necessarily accompany them, as well in death, as in life.
- 1609, William Shakespeare, Sonnet CXXXV:
- Thou hast thy Will, And Will too boote, and Will in ouer-plus.