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Praiseworthy
Positive Connotation
Use 'praiseworthy' for expressing positive recognition, implying something is not only good but also deserving of praise. 
Selective Praise
'Praiseworthy' suggests selective approval, not everything well done is called praiseworthy. 
Measured Enthusiasm
'Praiseworthy' carries a restrained enthusiasm, less strong than 'extraordinary' or 'remarkable'. 