hard and ...?
hard and soft.
top and ...?
top and bottom.
happy and ...?
happy and sad.
fast and ...?
fast and slow.
big and ...?
big and small
cold and ...?
cold and hot.
front and ...?
front and back.
closed and ...?
closed and open
go and ...?
go and stop.
full and ...?
full and empty.
up and ...?
up and down.
tall and ...?
tall and short.
day and ...?
day and night.
boy and ...?
boy and girl
laugh and ...?
laugh and cry
near and ...?
near and far.
sweet and ...?
sweet and sour.
... and small.
big and small.