固かたい約やく束そくMeaningsExpressionNoun1. solemn promiseKanji used固solidify約promise束bundleComposed of固かたいhard; solid; tough; stiff; tight; wooden; unpolished (e.g. writing); strong; firm (not viscous or easily moved); safe; …I-adjective約やく束そくpromise; agreement; arrangement; one's word; contract; pact; appointment; engagement; date; convention; …Noun