On the rocks
/ɒn ðə rɒks/informalUK · US
What does “On the rocks” mean?
On the rocks means in serious trouble and likely to fail
A couple who are discussing whether to separate might describe their marriage as on the rocks. They have not necessarily split up yet.
At a bar, “on the rocks” has a different meaning: served over ice. A whisky on the rocks is a drink order, not a complaint.
When do people say it?
Often used about a marriage, relationship or business that may not survive. It suggests more than a small disagreement or setback.
“After months of arguing, their marriage was on the rocks.”
Is it formal or informal?
Register: informal. It is most at home in everyday conversation rather than formal writing. Most common in UK and US.
Where does it come from?
Picture a ship stuck on rocks and in danger of breaking apart. The phrase gives a troubled relationship or business that same sense of danger.
Origin confidence: Disputed; treat with caution
How do you say “On the rocks” in other languages?
Related idioms
- On thin ice, In a risky situation close to trouble.
Last updated 2026-10-01