poison-pen letter

malicious letter sent deliberatelyto upset or offend the receiver 诽谤信.

point for point, point of view, point out, point to, point-blank, point-duty, point-to-point, pointed, pointer, pointillism, pointillist, pointing, pointless, pointlessly, pointlessness, points, pointsman, poise, poised, poison, poisonous, poisonously, poke, poker, poker-face, poker-faced, poker-work, pokiness, poky, Poland, polar, polar bear, Polaris, polarity, polarization, polarisation, polarize, polarize, polarise, Polaroid, Polaroid camera, Pole,