noun
Refers to an emotional, often tender or nostalgic, state of mind. Can carry a slightly negative nuance of being overly emotional or maudlin.
彼の話は感傷に満ちていた。
His story was full of sentiment.
感傷に浸るのはもうやめよう。
Let's stop indulging in sentimentality.
Compound of 感 (かん, 'feeling') and 傷 (しょう, 'wound'), suggesting an emotion that touches or wounds the heart. The exact historical derivation is uncertain, but the kanji combination is conventionally associated with the meaning of sentimentality.