What is the meaning of Estää?

to prevent, forestall, preclude

to avert

to prevent, stop, keep, hinder, obstruct, block someone [with elative of third infinitive ‘from doing’]

to deter, impede, block someone [with elative of third infinitive ‘from doing’]

to block (on social media)

to prevent; to hinder (from)

Source: wiktionary.org