Smidgen (noun)

1. A very small amount.
2. A tiny quantity of something.

Origin:

From smidge + -en.

Examples:

1. I only need a smidgen of sugar in my tea.
2. The recipe calls for a smidgen of vanilla extract.
3. The painting was off by just a smidgen.
4. The smidgen of hope was enough to keep her going.
5. The smidgen of evidence was not enough to prove the case.