Historical clue formulations

• Say "Hey," say — 2026-08-15
• Say "hey," slangily — 2026-01-31
• "Heyo!" — 2026-01-13
• Shout, colloquially — 2025-07-16
• Give a greeting, in slang — 2024-04-12
• Slangy greeting — 2024-03-24
• Casual greeting — 2022-09-28
• Shout, informally — 2021-06-13
• Give a casual greeting, in modern lingo — 2019-07-17
• Shouted casual greeting — 2017-05-04
• Say hi, in modern lingo — 2015-07-04