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usefull (comparative more usefull, superlative most usefull)

  1. Obsolete form of useful.
    • a. 1662 (date written), Thomas Fuller, The History of the Worthies of England, London: [] J[ohn] G[rismond,] W[illiam] L[eybourne] and W[illiam] G[odbid], published 1662, →OCLC:
      For Pens, so usefull for Scholars to note the remarkables they read, with an impression easily deleble without prejudice to the Book.