<p><strong>Noun</strong></p><ul><li>keen mental suffering or distress over affliction or loss; sharp sorrow; painful regret.</li><li>Synonyms: moroseness, melancholy, sadness, misery, woe, heartache, anguish.</li><li>Antonyms: joy.</li><li>a cause or occasion of keen distress or sorrow.</li></ul><p><strong>Verb</strong></p><ul><li>(used with or without object) griefed, grief·ing.</li><li>Digital Technology: (in an online video game) to behave in an unsportsmanlike way or take pleasure in antagonizing (other players): I reported the jerk who griefed me yesterday—I hope they ban his account.</li><li>to exploit a glitch or execute an online prank that ruins a website or other online experience for (users): Posting flashing content to an epilepsy site is taking griefing to a malicious and dangerous extreme.</li></ul>