Adjectives describe nouns. In English, adjectives go before the noun: "a big house" · "a fast car". They also go after the verb to be: "The house is big." Adjectives never change for plural: "big houses" (not "bigs houses").
Size
big / large
/bɪɡ/ /lɑːdʒ/
They live in a big house.
small / little
/smɔːl/ /ˈlɪt.l/
She has a small dog.
tall
/tɔːl/
He is very tall.
short
/ʃɔːt/
She is short but fast.
long
/lɒŋ/
She has long hair.
Age & condition
old
/əʊld/
This is a very old city.
new
/njuː/
I have a new phone.
young
/jʌŋ/
She is young and energetic.
clean
/kliːn/
Keep your room clean!
dirty
/ˈdɜː.ti/
His shoes are dirty.
Quality & appearance
beautiful / pretty
/ˈbjuː.tɪ.fəl/ /ˈprɪt.i/
What a beautiful day!
ugly
/ˈʌɡ.li/
That building is very ugly.
nice
/naɪs/
What a nice person!
good
/ɡʊd/
She is a good teacher.
bad
/bæd/
The weather is bad today.
Other common adjectives
fast / quick
/fɑːst/ /kwɪk/
He is a fast runner.
slow
/sləʊ/
The bus is very slow.
easy
/ˈiː.zi/
The test is easy.
difficult / hard
/ˈdɪf.ɪ.kəlt/ /hɑːd/
This exercise is difficult.
expensive
/ɪkˈspen.sɪv/
This hotel is very expensive.
cheap
/tʃiːp/
The market has cheap fruit.
interesting
/ˈɪn.trɪ.stɪŋ/
This book is interesting.
boring
/ˈbɔː.rɪŋ/
The film is boring.
Adjectives don't change:
In English, adjectives are always the same — singular or plural, masculine or feminine: "a big house" → "big houses" · "a tall man" → "tall women". No endings like Spanish (-o/-a/-os/-as).