The phrase "to dampen the speculation" means to reduce or suppress the guessing or rumors circulating about something.
Sentences with «to dampen the speculation»
And Trump didn't dampen speculation about Rosenstein's future in a brief chat with reporters. (usatoday.com)
Mario Balotelli will go on AC Milan's pre-season tour of the United States, as the Italian club moved to dampen speculation linking the striker with a switch back to the Premier League — talkSPORT (caughtoffside.com)
Former Defence Secretary Liam Fox and Health Secretary Jeremy Hunt did not dampen speculation they may run. (thesun.co.uk)