I stifled a laugh.
Why did the company stifle that promising new drug?
Their rules are stifling my personality.
WordNet 3.0 Sense Numbers: 1, 2
The children are stifling in this foul air.
They (I say, whether first stifling her, or else strangling her) afterwards flung her down a pair of stairs.
WordNet 3.0 Sense Numbers: 3, 4