hot - hotter -the hottest
long - longer - the longest
short - shorter - the shortest
clever - cleverer - the cleverest
silly - sillier - the silliest
great - greater - the greatest
red - redder - the reddest
black - blacker - the blackest
white - whiter - the whitest
thin - thinner - the thinnest
thick - thicker - the thickest
fat - fatter - the fattest
nice - nicer - the nicest
warm - warmer - the warmest
cold - colder - the coldest
merry - merrier - merriest
small - smaller - the smallest
tall - taller - the tallest
high - higher - the highest
weak - weaker - the weakest
strong - stronger - the strongest
heavy - heavier - the heaviest
light - lighter - the lightest
green - greener - the greenest
dry - drier/dryer - the driest/the dryest
clean - cleaner - the cleanest
dirty - dirtier - the dirtiest
wide - wider - the widest
deep - deeper - the deepest
brave - braver - the bravest