seethe

1 ENTRIES FOUND:
seethe /ˈsiːð/ verb
seethes; seethed; seething
seethe
/ˈsiːð/
verb
seethes; seethed; seething
Britannica Dictionary definition of SEETHE
[no object]
1 
: to feel or show strong emotion (such as anger) even though you try to control it — often + with
2 
: to be in a state of constant activity
— often used as (be) seething with