build up
US /bɪld ʌp/
UK /bɪld ʌp/
1.
to increase or strengthen something gradually
:
•
She needs to build up her strength after the illness.
•
The company managed to build up a good reputation over the years.
2.
to praise someone or something in an exaggerated way, often to increase their importance or value
:
•
The media tried to build up the new celebrity.
•
Don't build up your hopes too much.