Geniality is a fancy word for friendliness. We show geniality when we are pleasant, kind, and nice to be around.
People usually like other people who show geniality. Having the synonyms "amiability" and "affability," this word has to do with bring friendly and approachable. Mean, scary people show no geniality at all. Smiling, giving compliments, laughing, listening to others, and helping out are all signs of geniality. If you think about the people you like, part of what you like is probably their geniality — they're congenial.
