(=control)
to lose one's grip (fig) perdre les pédales, être dépassé(e)
→ Franco had finally lost his grip.
to lose one's grip on reality perdre le sens de la réalité
→ He's lost his grip on reality.
to lose one's grip on power perdre le contrôle du pouvoir
→ The Liberal Party has lost its grip on power.
to get a grip se ressaisir
→ Get a grip!
to get a grip on sth prendre en main qch
→ The UN is struggling to get a grip on the management of its peacekeeping missions.
to get a grip on o.s. se ressaisir
→ Come on Graeme, get a grip on yourself.
an iron grip, The president maintains an iron grip on his country. Le président tient son pays avec une poigne de fer.