art
art for art's sake

conscience
for conscience sake

example
for example's sake

form
for form's sake

God
for God's sake!

goodness
for goodness sake!

heaven
for heaven's sake!

honour
for honour's sake

pity
for pity's sake

safety
for safety's sake

sake
for the sake of

saké
saqué

simplicity
for the sake of simplicity

time
for old times' sake