Maleficial

//ˌmælɪˈfɪʃəl// adj

Definitions

Adjective
  1. 1
    injurious, damaging archaic

    "The late mention of the prelates' advice, in passing a law so maleficial unto them, giveth me just occasion to name some, the principal persons of the clergy, present thereat […]"

Etymology

From malefice + -ial.

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