Wiktionary
vb. (context idiomatic English) To unwillingly stay seated until the end of an event.
Usage examples of "sit through".
And I'm probably too old anyway for all the rigorous debates you'll have to sit through, after you milk Kata for all she's worth and then hire a dozen or so of the best Emerald philosophers to give it all a respectable polish and proper terminology.
He would sit through fiery denunciations of wealth, nodding his head slowly in agreement.
Casaubon was out of the question, not merely because he declined duty of this sort, but because Featherstone had an especial dislike to him as the rector of his own parish, who had a lien on the land in the shape of tithe, also as the deliverer of morning sermons, which the old man, being in his pew and not at all sleepy, had been obliged to sit through with an inward snarl.
It was evident that the host and the lady on his right could not sit through the whole meal in silence.
It might have worked to a degree, if people hadn't had to sit through a speech, ill written and mostly ill read, on the virtues of King Gurtho and the dangers of the Kullvordi.
But Claire throws a huge tantrum if we refuse to watch, so it's easier just to sit through it again.