over-
/ˈəʊvə(r)/prefix
1
- excessively; to an unwanted degree表示“过分地”; “过度地”：
overambitious
overcareful
1.1
- completely; utterly表示“完全地”, “彻底地”：
overawe
overjoyed
2
- upper; outer; extra表示“上”; “外”; “额外”：
overcoat
overtime
2.1
- over; above表示“越过”; “在上面”, “在上方”：
overcast
overhang