If you quell fears, you calm them.
Her stern look was known to quell troublemakers.
Her identity is defined by her basketball team.
He’s long defined himself by his relationships.
The effects of the ban on cars materialized quickly—there was less smog, traffic deaths, and wild animals roaming the streets!
The predicted market rebound may not materialize.
Layoffs are unlikely to stop for the foreseeable future.
There are no foreseeable problems, but always stay prepared, just in case.