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3. Ultra-fast jet

Alternative clues for the word sst

• Former fast jet, for short
• European streaker, once, in brief
• Option for the jet set
• Heathrow plane
• Old fast plane: Abbr
• Atlantic crosser, once
• Old Atl. crosser
• Onetime J.F.K. sight
• Bygone boomer
• One of a retired set