Use 'geniality' to describe someone who makes others feel comfortable, especially in leadership roles. Her geniality made her an excellent team leader.
Pro Tip 2/3
Positive Tone
'Geniality' is often used to highlight a positive change in mood or behavior. After the tense negotiation, his geniality was a welcome relief.
Pro Tip 3/3
Unexpected Warmth
The word can describe a moment of friendliness that is surprising or not typical for the person. The professor's geniality today was a surprise to her usually quiet class.