Region: General | Usage example: The donation was a drop in the bucket compared with the budget shortfall.

A drop in the bucket

Meaning

A very small part of something much larger.

Used when a contribution is too little to make a noticeable difference.

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

Water metaphor describing a single drop compared with a large container.

Used to temper expectations when discussing small contributions.