dirty
pigs are dirtier than dogs
big
an elephant is bigger than a mouse
strong
gorillas are stronger than monkeys
beautiful
a swan is more beautiful than a dog
dangerous
sharks are more dangerous than dolphins
ugly
rats are uglier than rabbits
safe
cats are safer than tigers
small
fish are smaller than whales
short
goats are shorter than giraffes
sad
he is sadder than her
beautiful
she is more beautiful than him
colourful
parrots are more colorful than birds
fat
he is fatter than her
slow
turtles are slower than rabbits
fast
horses are faster than cows