seething

UK: /ˈsiːðɪŋ/

From the verb seethe: (⇒ conjugate)

seething is: ⓘ

v pres p

Collins Concise English Dictionary © HarperCollins Publishers::

seething / ˈsiːðɪŋ/ adjective

1. boiling or foaming as if boiling
2. crowded and full of restless activity
3. in a state of extreme agitation, esp through anger

WordReference Random House Learner's Dictionary of American English © 2025

seethe /sið/   v. [no object] , seethed, seeth•ing. 

1. (of a liquid) to bubble as if boiling.
2. to be in a state of excitement or anger:
   sat there seething after listening to his insults.

WordReference Random House Unabridged Dictionary of American English © 2025

seethe  (sēᵺ), v., seethed or (Obs.) sod* seethed or (Obs.) sod•den or sod;
seeth•ing;
 n. 
v.i. 

1. to surge or foam as if boiling.
2. to be in a state of agitation or excitement.
3. [Archaic] to boil.

v.t. 

4. to soak or steep.
5. to cook by boiling or simmering;
   boil.

n. 

6. the act of seething.
7. the state of being agitated or excited.

• bef. 900; Middle English; Old English sēothan; cognate with German sieden, Swedish sjuda

seeth′ing•ly, adv. 
Synonyms

• 2. See boil ¹.

Collins Concise English Dictionary © HarperCollins Publishers::

seethe / siːð/ verb

1. (intransitive) to boil or to foam as if boiling
2. (intransitive) to be in a state of extreme agitation, esp through anger
3. (transitive) to soak in liquid
4. (transitive) to cook or extract the essence of (a food) by boiling

Etymology: Old English sēothan; related to Old Norse sjōtha, Old High German siodan to seethe