Frostily
/ˈfrɔːstɪli/
Definition 1 of 1
Pro Tip 1/3Emotional Chill
Used to describe a vibe of cold emotions, showing lack of warmth or affection in interactions. 
His frostily delivered apology made it seem insincere.
Pro Tip 2/3Social Distance
Indicates creating social space and can suggest disapproval or dislike towards someone's actions or presence. 
She greeted him frostily, maintaining her distance.
Pro Tip 3/3Subtle Hostility
Implies a mild form of hostility or the presence of underlying tension in a social setting. 
When asked about her ex-partner, she spoke frostily, her disdain barely concealed.