verb/tɾastoˈkaɾ/
to upset, unsettle
“En los últimos días, la idea ha ganado fuerza gracias a la demanda antimonopolio presentada por el Departamento de Justicia de EE UU contra Google, que puede trastocar de lleno la relación que mantienen Apple y Google.” — In recent days, the idea has gained momentum thanks to the antitrust lawsuit filed by the US Department of Justice against Google, which may completely disrupt the relationship between Apple and Google.
Synonyms: trastornar
From trastrocar.