Sentence examples similar to a subtle groan from inspiring English sources

A creak, a groan, a hoot.

A subtle signal?

Iranians are a subtle people.

A subtle or obvious message?

It is a subtle war.

This is a subtle concept.

A subtle portent lurks behind.

A subtle underlying levity prevailed.

Again, a subtle lesson.

It's a subtle influence.

There is a subtle difference".