名詞 monster:

1. an imaginary creature usually having various human and animal parts
2. someone or something that is abnormally large and powerful
   同義詞：giant, goliath, behemoth, colossus
3. a person or animal that is markedly unusual or deformed
   同義詞：freak, monstrosity, lusus naturae
4. a cruel wicked and inhuman person
   同義詞：fiend, devil, demon, ogre
5. (medicine) a grossly malformed and usually nonviable fetus
   同義詞：teras

1. I'm frightened of the monster.
   我怕妖怪。
2. He was possessed with a monster.
   他被一個怪物纏上了。
3. This machine is a real monster.
   這臺機器真是個龐然大物。
4. Dinosaurs are monsters.
   恐龍是種巨獸。

mon.ster

n.（名詞）

An imaginary or legendary creature, such as a centaur or Harpy, that combines parts from various animal or human forms.
怪物：一個想象或傳說中的由各種獸形或人形組成的怪物，如半人半馬的怪物或哈比（一種怪物）
A creature having a strange or frightening appearance.
外表奇特或恐怖的動物
An animal, a plant, or other organism having structural defects or deformities.
畸形生物：有結構缺陷或畸形的動物、植物或其他生物
Pathology A fetus or an infant that is grotesquely abnormal and usually not viable.
【病理學】 畸胎：畸形的且通常不能成活的胎兒或嬰兒
A very large animal, plant, or object.
巨形動物、植物或物體
One who inspires horror or disgust:
讓人感到恐懼或厭惡的人：
例句：
a monster of selfishness.
極其自私的人

來源：
Middle English monstre
中古英語 monstre
from Old French
源自 古法語
from Latin mônstrum [portent, monster]
源自 拉丁語 mônstrum [奇事，怪物]
from monôre [to warn] * see men-
源自 monôre [警告] *參見 men-