put a damper on
US /pʊt ə ˈdæmpər ɑn/
UK /pʊt ə ˈdæmpər ɑn/

1.
merusak, mengurangi semangat
to have a negative effect on something, making it less enjoyable or successful
:
•
The bad weather really put a damper on our picnic plans.
Cuaca buruk benar-benar merusak rencana piknik kami.
•
His negative attitude always puts a damper on team morale.
Sikap negatifnya selalu merusak semangat tim.