different between unventilated vs stifling

English

From un- +? ventilated.

unventilated (not comparable)

stifling (comparative more stifling, superlative most stifling)

That stifles.
The heat was stifling; it seemed hard to breathe and the exertion of rolling over on the bed seemed too much.

stifling

stifling (plural stiflings)

The act by which something is stifled.
- 1857, Henry Clay Fish, Pulpit eloquence of the nineteenth century (page 507)
  Every man who is destroyed must destroy himself. When a man stifles an admonition of conscience, he may fairly be said to sow the stiflings of conscience.

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