British & Australian

something that you say which means because one good thing has happened, you cannot therefore be certain that more good things will happen and the whole situation will improve.

Okay, they won their last game but one swallow doesn't make a summer. They're still bottom of the league.

• up your sleeve
• use a sledgehammer to crack a nut
• used to
• used to doing something
• used to do something
• used to something
• Use loaf.
• use something to good account
• use to good account
• use up
• use up something
• Use your loaf.
• usher in
• usher in something
• usher someone in
• vanish into thin air
• vanish off the face of the earth
• Variety is the spice of life.
• vent spleen
• vent your spleen
• verbal diarrhoea
• very much so
• very well
• vicious circle
• villain of the piece