Adjectives are words that describe and give more information about nouns and pronouns.
Adjectives can tell us about:
colour: pink, orange
size: thick, thin
shape: square, oval
quality: evil, kind
Adjectives can be compared in three forms: positive, comparative and superlative:
I think the teacher is nice, but my granny is nicer, and my best friend is the nicest.
The first movie was fantastic, but the next one was even more fantastic, and the last one was the most fantastic ever.
The weather was bad this morning, and in the afternoon it got worse, but the weather forecast says the worst weather will arrive at midnight.