You want to talk about the best (or worst)? You need to know the superlative form of an adjective. This is used to describe the one thing that is the most/least like the adjective. With superlatives, there can be only one (or one group).
For adjectives that are 1 syllable
Use: the + adjective (add -est)
Tall – She is the tallest in her class.
Short – He is the shortest in the school.
*For adjectives that ends with consonant-vowel-consonant, you usually need to double the last consonant before the -est.
Hot – Hawaii is the hottest state.
Fat – This is the fattest cat I have ever seen.
For adjectives that are 2+ syllables (not ending in -y)
Use: the more/ the least + adjective
Crowded – The bus is the most crowded at rush hour.
Boring – The math teacher is the least boring teacher at the school.
For adjectives that are 2 syllables ending in -y
Use: the + adjective (change -y to -i and add -est)
Happy – He is the happiest man in the world.
Lucky – They are the luckiest people alive.
**Of course, there are exceptions to every rule! Be careful of adjectives that take an irregular form in the superlative. Here are some examples below.
Fun – use most – This is the most fun game I have ever played!
Narrow- add -est – This is the narrowest turn in the river.
Ask in the Comments Form or book a class with me to practice this grammar point.