stuffy; boringly conservative
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stodgy
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braggart
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degenerate
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propinquity
A
Correct answer
Explanation
Stodgy means stuffy, boringly conservative, or heavy/dull (often describing food, people, or atmospheres). Braggart is a boaster, degenerate means declined, and propinquity means nearness. Only stodgy captures 'stuffy and boringly conservative.'