Просклоняйте по . яз. в степенях прилагательных. new, big, large, small, tiny, high, tall, modern, clean, calm, quiet, peaceful

New - newer - the newest
big - bigger - the biggest
large - larger - the largest
small - smaller - the smallest
tiny - tinier - the tiniest
high - higher - the highest
tall - taller - the tallest
modern - more modern - the most modern
clean - cleaner - the cleanest
calm - calmer - the calmest
quiet - quieter - the quietest
peaceful - more peaceful - the most peaceful