Na-adjective, Noun
1. deplorable; bad luck; regret; disappointment
Wikipedia definition
2. Regret (emotion)Regret is a negative conscious and emotional reaction to personal past acts and behaviors. Regret is often expressed by the term "sorry. " Regret is often a feeling of sadness, shame, embarrassment, depression, annoyance or guilt, after one acts in a manner and later wishes not to have done so. Regret is distinct from guilt, which is a deeply emotional form of regret — one which may be difficult to comprehend in an objective or conceptual way.
Read “Regret (emotion)” on English Wikipedia
Read “残念” on Japanese Wikipedia
Read “Regret (emotion)” on DBpedia


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