at worst
idiomPart ofworst
at worst — idiom
1. used to mean that the most negative or extreme possibility in a range of outcome
1.idiom
Definition
used to mean that the most negative or extreme possibility in a range of outcomes is still not too serious.
Example
The delay will cost us an extra hour at worst, so there is no need to panic.
At worst, the project will be postponed by a month rather than cancelled entirely.