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