The word 'affiches' means posters or advertisements, but a few antonyms of this word can be silence, secrecy, and privacy. Silence is the absence of sound, noise, or speech; it is a state of peace and serenity, devoid of any disturbance or agitation. Secrecy means confidentiality, concealing or guarding information, and not sharing it with others. Privacy refers to seclusion and being free from unwanted attention or observation by others. These three antonyms of 'affiches' convey a sense of calmness, solitude, and introspection, which are, at times, much needed in our fast-paced and noisy world.