uneffectual

English

Etymology

From un- +‎ effectual.

Adjective

uneffectual (comparative more uneffectual, superlative most uneffectual)

ineffectual.
- c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act I, scene v]:
  his uneffectual fire