封じる
1
to seal (e.g. a letter)
2
to prevent (e.g. movement);to forbid;to block (e.g. speech);to seal off (e.g. a building)
See also:
口を封じる (くちをふうじる)
彼らは賄賂を使って証人の口を封じた。
They bribed the witness into silence.