Second-half goals from Richarlison and Etienne Capoue gave Watford their first Premier League win of the season at AFC Bournemouth.
After a goalless first half, in which Andre Gray almost opened his account for Watford but lifted a shot over from six yards, a good spell of pressure for the visitors was rewarded with a goal.
It was Richarlison who broke the deadlock, the Brazilian scoring his first goal for the club by bundling in Gray's cross on 73 minutes.
Capoue secured Marco Silva's first three points as Watford manager with a stunning long-range strike four minutes before the end.
The win also ended Watford’s run of seven successive away PL defeats.