Synonyms for Stuffy (same or very similar meaning)
WordNet sense 1 (lacking fresh air):
airless, close, unaired
WordNet sense 2 (not ventilated):
unventilated
WordNet sense 3 (shut off to passage or view or hindered from action):
obstructed
WordNet sense 4 (excessively conventional and unimaginative and hence dull):
stodgy
WordNet sense 5 (following accepted customs and proprieties):
conventional
From the ODE community, based on WordNet
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