having the capacity for thought and reason especially to a high degree;
"is there intelligent life in the universe?"
"an intelligent question"
possessing sound knowledge;
"well-informed readers"
exercising or showing good judgment;
"healthy scepticism"
"a healthy fear of rattlesnakes"
"the healthy attitude of French laws"
"healthy relations between labor and management"
"an intelligent solution"
"a sound approach to the problem"
"sound advice"
"no sound explanation for his decision"
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