1. Belonging to some prior time
   - erstwhile, former, old, one-time, quondam, sometime

1. On one occasion
   - once, in one case

See also: past

• yabber
• yacca
• yacca podocarp
• yacht
• yacht chair
• yacht club
• yacht race
• yachting
• yachting cap
• yachtsman
• yachtswoman
• yack
• yack away
• yacker
• yackety-yak
• yaffingale
• yaffle
• Yafo
• yagi
• Yagi aerial
• yah
• Yahi
• yahoo
• Yahve
• Yahveh