静寂|せいじゃくseijaku[0]heiban (flat)

1. noun, na-adjectivesilence; stillness; quietness
   その幻まぼろしは意識いしきの中なかに宿やどり、静寂せいじゃくのなかで動うごかない。↗

   The vision that was planted in my senses still silently lingers.

• Synonym静かしずかNeutralThe everyday word for quiet and by far the most common; it covers far more ground than 「静寂」, which is a written-style noun evoking deep, utter stillness.
• Synonym静粛せいしゅくFormalFormal word for orderly quiet, as in 「ご静粛に」; mainly about asking people to keep silent, but also used of quiet settings or machines running without loud noise.
• Synonym閑静かんせいNeutralDescribes tranquil surroundings, used mostly of residential areas as in 「閑静な住宅街」; it is about the place, not a moment of deep silence.
• Synonym物静かものしずかNeutralDescribes a quiet, gentle manner; used mainly of people's bearing and behavior, without the utter-stillness feel of 「静寂」.
• Synonym静けさしずけさNeutralNeutral noun for the degree or atmosphere of quiet, as in 「嵐の前の静けさ」; it can also suggest utter stillness, but 「静寂」 is the more written choice.
• Synonym無声むせいWrittenWritten word for having no sound or voice; also the technical term for unvoiced sounds, so it lacks the poetic hush of 「静寂」.
• Synonym密やかひそやかWrittenWritten word for a hushed, under-the-breath quiet; it suggests secrecy and does not evoke the deep, all-is-still feeling of 「静寂」.
• Synonym閑寂かんじゃくWrittenWritten word for a quiet, secluded tranquility tinged with loneliness; it lacks the sense of everything lying still that 「静寂」 has.
• Synonym寂静じゃくじょうWrittenWritten, Buddhist-flavored word for a mind settled and calm; 「静寂」 by contrast describes the silence of the outside world.
• Synonym森閑しんかんWrittenWritten word for a scene without a single sound, typically in the form 「森閑とした」.
• Related沈黙ちんもくWrittenThe same word in its kun-reading 「しじま」: an archaic, poetic term for utter stillness; the on-reading 「せいじゃく」 is the more common choice.
• Related無言むごんWrittenThe same word again: written 「沈黙」 or 「無言」 it can be read 「しじま」 in this archaic sense, though those spellings are normally read 「ちんもく」 and 「むごん」.
• Related粛然しゅくぜんWrittenWritten word for a solemn, dignified hush; the quiet it describes is solemn rather than the blanket stillness of 「静寂」.
• RelatedだんまりCasualColloquial word for staying silent or a person who does, as in 「だんまりを決め込む」; about not speaking, not about a quiet scene.
• RelatedサイレンスNeutralLoanword for silence with a literary, artistic flavor; unlike 「静寂」 it does not evoke deep, all-encompassing stillness.
• Antonym喧騒けんそうWrittenWritten-style antonym: the clamor and bustle of a crowded place; the direct opposite of the stillness of 「静寂」.
• Antonym騒音そうおんNeutralNeutral antonym: loud, unpleasant noise; the plain, everyday opposite of quiet.
• Antonym騒々しいそうぞうしいNeutralNeutral antonym adjective: noisy, loud and boisterous; describes places or situations that are anything but quiet.

「静寂」 is a written-style noun for deep, utter stillness, as in 「夜の静寂」. In daily speech choose 「静か」 or 「静けさ」. For a quiet neighborhood use 「閑静」, for calling a room to order 「静粛」, for a person's quiet demeanor 「物静か」, for stealthy quiet 「密やか」, for solemn hush 「粛然」, and for calm of mind 「寂静」. The poetic kun-reading 「しじま」 is literary; 「沈黙」 and 「無言」 normally mean silence in speech. Antonyms: 「喧騒」 (written), 「騒音」, 「騒々しい」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 静しずまりかえっている状態じょうたい。
2. 静しずまりかえったさま。