simmer

US /ˈsɪm.ɚ/
UK /ˈsɪm.ɚ/
"simmer" picture
1.

to stay just below the boiling point while being heated

:
Let the sauce simmer for 20 minutes.
The soup should simmer gently, not boil vigorously.
2.

to be in a state of suppressed anger or excitement

:
Her anger continued to simmer beneath the surface.
Tensions have been simmering between the two countries for months.
1.

a state or process of simmering

:
Bring the mixture to a simmer, then reduce heat.
The conflict remained at a low simmer for years.