on the sidelines
US /ɑn ðə ˈsaɪdˌlaɪnz/
UK /ɑn ðə ˈsaɪdˌlaɪnz/

1.
in disparte, non coinvolto
not actively involved in something; observing rather than participating
:
•
He preferred to stay on the sidelines during the heated debate.
Ha preferito rimanere in disparte durante l'acceso dibattito.
•
Many investors are currently sitting on the sidelines, waiting for the market to stabilize.
Molti investitori sono attualmente in disparte, in attesa che il mercato si stabilizzi.