Sometimes 'unfriendly' indicates more passive aggression than open hostility. Her silence was unfriendly, suggesting she was upset with me.
Pro Tip 2/3
Cold Reception
Used to describe a lack of warmth or welcoming behavior in social situations. I felt unfriendly vibes at the party and left early.
Pro Tip 3/3
Personal Interactions
'Unfriendly' can imply someone is intentionally being cold or distant in a personal interaction. He was unfriendly during the meeting, barely making eye contact.