underbelly
nounUK /ˈʌndəˌbeli/
US /ˈʌndərˌbeli/
The soft lower part of an animal's body.
The snake showed its pale underbelly as it rolled over.
SYNONYMS
OTHER MEANINGS
2. The weak or easily hurt part of something.
The team's defense was the underbelly of their game.
3. The hidden and often unpleasant side of a place or situation.
The novel explores the dark underbelly of city life.
4. The lower surface of a vehicle or object.
The mechanic checked the underbelly of the car for rust.