1. Slightly sour to the taste

See also: sour

• unburden
• unburdened
• unburied
• unburned
• unburnished
• unburnt
• unbutton
• unbuttoned
• uncalled-for
• uncamphorated
• uncannily
• uncanny
• uncap
• uncapped
• uncarbonated
• uncared-for
• uncaring
• uncarpeted
• uncarved
• uncase
• uncastrated
• uncategorised
• uncategorized
• uncaulked
• uncaused