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