adverb taking the 'to' particle, taru-adjective
quietly; still and silent
Archaic literary word describing a profound, still quietness. Used with と or in たる form.
The temple at night was utterly silent, with a profound stillness.
The historical derivation is uncertain; the kanji 闃 is composed of 門 (gate) and 狊 (a dog with a large head, suggesting watchfulness), conventionally associated with stillness and silence.