核かく心しん的てきじ字FuriganaAudioMeanings1na-adjectivecrucial; critical; vital; coreDescribes the most important, central, or essential part of something. Often used in formal or analytical contexts.この問もん題だいの核かく心しん的てきな部ぶ分ぶんを理り解かいする必ひつ要ようがある。Break this sentence down in the analyzerWe need to understand the crucial part of this problem.彼かれの指し摘てきは核かく心しん的てきだった。Break this sentence down in the analyzerHis point was right to the heart of the matter.