Effortful

the GNU version of the Collaborative International Dictionary of English
  • adjective. requiring great physical effort. Opposite of effortless.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • adjective. Requiring or showing effort.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • adjective. requiring great physical effort
  • Word Usage
    "Research is cited that supposedly shows that readers are vulnerable to a kind of cognitive incaution and "must engage in effortful processing to disbelieve the information they encounter in literary narratives.""
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