はっしはっしMeanings1adverb taking the 'to' particlewith a loud clackusually written using kana alonearchaicArchaic onomatopoeic adverb describing a sharp, loud clacking sound, such as wood or stone striking together. Takes the particle と.古ふるい文ぶんに「はっしと音おとを立たてて」とある。In an old text, it says 'with a loud clack'.