Historical clue formulations

• Uselessly — 2024-12-01
• Futilely — 2014-12-14
• Futile — 2013-04-18
• For nothing — 2010-07-04
• For nothing — 2004-04-17
• To no avail — 2003-12-02
• To no avail — 1999-12-28
• Fruitlessly — 1998-11-15