DictionaryseetheConcealed anger
verb

seethe

SEETHE/siːð/

To feel intense anger while showing little of it.

The adult seethes quietly, clenching a fist beneath the table.

A South Asian adult quietly clenches jaw and fist under a table, controlled face with visible simmering anger, no violence.
Etymology

Boiling and foaming gave a figure for anger churning intensely beneath the surface.

More examples

  • He seethes behind a polite smile.
  • She leaves the meeting seething with resentment.

Forms

seethe · seethes · seething

Similar words

fume
Feel or express strong irritation.
smolder
Harbor anger that remains partly concealed.