Dint

Used in a sentence:

• The dint of his punch didn’t even put a dent in the armor but then, it didn’t have to.

Source: Wiktionary

Commentary:

Dint means dent. It is a fairly old world that has obviously fallen out of use so much that it doesn’t really have a good use. Using it to mean force or power would more likely to confusion. It also doesn’t sound all that powerful, so I suppose you might use it to suggest a weak amount of power.