未練たらたら、未練タラタラ
みれんたらたら
mirentaratara
JMdict entry #2836603
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adjectival nouns or quasi-adjectives (keiyodoshi)nouns which may take the genitive case particle 'no'
unable to let go (e.g. of one's feelings); stuck in the past; regretful; irresolute
see: 未練, たらたら・2