underperform
US /ˌʌndərˈpərˌfɔːrm/
UK /ˌʌndərˈpərˌfɔːrm/

1.
berkinerja buruk, kurang berprestasi
perform less well than expected
:
•
The company's stock continued to underperform in the market.
Saham perusahaan terus berkinerja buruk di pasar.
•
The new software tends to underperform when too many users are online.
Perangkat lunak baru cenderung berkinerja buruk ketika terlalu banyak pengguna daring.