tip of the iceberg
- (idiomatic) Only the beginning; just a small indication of a larger possibility; a problem is much bigger than it seems
- This is only the tip of the iceberg. Our problems can become much worse.
- 2014, A teacher, "Choosing a primary school: a teacher's guide for parents", The Guardian, 23 September 2014:
- Sats don't reflect the bigger picture; rather the tip of an iceberg in the only subjects that politicians think matter.
only the beginning