time bomb
ti·me·bomb
noun
1.
a problematic situation that will eventually become dangerous if not addressed
- “India is a demographic time bomb”
- “the refugee camp is a ticking bomb waiting to go off”
2.
a bomb that has a detonating mechanism that can be set to go off at a particular time
Related words
WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.