Verb: buoy up
- Keep afloat
- buoy
- Become more cheerful
"His spirits buoyed up after receiving the letter";
- lighten, lighten up
- Make more cheerful
"The surprise visit buoyed up his spirits";
- lighten, lighten up
Derived forms: buoying up, buoyed up, buoys up
Type of: buck up [informal], cheer, cheer up, hold, hold up, jolly [informal], support, sustain