gusatto
Something sharp stabbing deep in one thrust; figuratively, words that pierce straight into the heart.
💡A blunt remark that hits home — 'That comment stabbed gusatto.'
友達の何気ない一言がぐさっと胸に刺さった。
My friend's casual remark stabbed me gusatto right in the heart.
Her offhand comment ___ pierced my heart.
友達の何気ない一言が○○胸に刺さった。