no they are not
Antonyms are words that have pretty much opposite meanings.
No, many words have no opposite (such as "grass" or "plaster").
Antonyms
antonyms
antonyms
antonyms
Some words do not have opposites [antonyms]. The word "such" has no antonym, unless it it used in terms of "how much". For example: She was such a sight. When used as a "how much" word, antonyms are "little" or "slight".
They are antonyms.
Antonyms
Antonyms
No they are antonyms
Antonyms