lose ground
US /luːz ɡraʊnd/
UK /luːz ɡraʊnd/

1.
perder terreno, perder popularidade
to become less popular or successful
:
•
The company started to lose ground to its competitors.
A empresa começou a perder terreno para seus concorrentes.
•
The candidate is losing ground in the polls.
O candidato está perdendo terreno nas pesquisas.