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adj.
constructing or tending to construct or improve or promote development; "constructive criticism"; "a constructive attitude"; "a constructive philosophy"; "constructive permission"
adj.
tending to promote physical well-being; beneficial to health; "beneficial effects of a balanced diet"; "a good night's sleep"; "the salutary influence of pure air"
adj.
having great material or monetary value especially for use or exchange; "another human being equally valuable in the sight of God"; "a valuable diamond"
adj.
worthy of high praise; "applaudable efforts to save the environment"; "a commendable sense of purpose"; "laudable motives of improving housing conditions"; "a significant and praiseworthy increase in computer intelligence"