1. Tasting or smelling like vinegar
   - acetose, vinegary, vinegarish

See also: sour

• old-man-of-the-woods
• old-time
• old-womanish
• old-world
• olde worlde
• olden
• Oldenburg
• older
• Oldfield
• oldie
• oldish
• oldness
• oldster
• oldtimer
• Olduvai Gorge
• oldwench
• oldwife
• ole
• Olea
• Olea cunninghamii
• Olea europaea
• Olea lanceolata
• Oleaceae
• oleaceous
• oleaginous