1. Serious - more serious - the most serious. 2. Small - smaller- the smallest. 3. Little- less- the least. 4. Dark-darker - the darkest. 5. Cold - colder- the coldest. 6. Polite - more polite- the most polite. 7. Big-bigger- the biggest. 8. Bad-worse-the worst. 9. Happy-happier- the happiest. 10. Good- better- the best.