soporific

He talked about it in his soporific acceptance speech at the Republican National Convention:

The Briton's efforts enlivened the final laps of what had been a largely soporific race, in which the only position change in the top five was Piastri moving past the second Ferrari of Carlos Sainz with an earlier pit stop, after challenging the Spaniard closely throughout the first stint.

Musty retreads of Ibsen and Chekhov, besides being counter to the maverick spirit of their play, can be soporific endurance tests.

It’s so effective a soporific that most nights I struggle to read for more than 10 minutes, which is both satisfying and maddening.

The smell of incense — a combination of frankincense and myrrh — leached from every corner of the space, creating a somewhat soporific effect.