"Open hostility" refers to a situation where someone openly shows strong negative feelings or aggression towards another person or group. Full definition
In the face of open hostility toward the press by our current government, The Post certainly feels like a heartened reminder of the battles that have come before and what we might learn from them today. (relevantmagazine.com)
Her arrival at Standing Rock is welcomed with open hostility by a US Army officer (Sam Rockwell), who has stationed troops around the Lakota reservation (metacritic.com)
Her arrival at Standing Rock is welcomed with open hostility by a US Army officer (Sam Rockwell), who has stationed troops around the Lakota reservation to undermine Native American claims to the land. (metacritic.com)