-ous
/əs/suffix
forming adjectives ［构成形容词］
1
- characterized by; of the nature of表示“有…特性的”, “有…性质的”：
dangerous
mountainous
2
- Chemistry denoting an element in a lower valency【化】表示“亚…的”：
ferrous
sulphurous.
比较-IC.
派生词
-ously
suffixforming corresponding adverbs
构成相应的副词
-ousness
suffixforming corresponding nouns
构成相应的名词。
词源
from Anglo-Norman French， or Old French -eus, from Latin -osus.