1. Favouring or promoting reform (often by government action)
   - progressive, reformist

See also: liberal

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• blue tit
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• blue tulip
• blue vitriol
• blue wall
• blue wall of silence
• blue walleye
• blue whale
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• blue-blind
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• blue-chip stock
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• blue-eyed African daisy
• blue-eyed boy
• blue-eyed grass
• blue-eyed Mary
• blue-flowered
• blue-fruited
• blue-gray
• blue-green