Historical clue formulations

• Perturbed — 2014-12-07
• In distress — 2012-08-09
• In a pique — 2011-06-28
• Irritated — 2010-06-21
• In a pique — 2008-01-16
• Nettled — 2005-10-18
• Sore — 2000-05-13