"Good to know you" or GKY is a common phrase used in casual conversations to express a friendly sentiment. However, if you're looking for some synonyms to switch up your vocabulary and add some variety to your communication style, here are a few options. Instead of saying GKY, you could say "it's nice to meet you," "great to see you," "pleased to make your acquaintance," or "delighted to know you." These alternatives convey a similar sentiment of friendliness and appreciation. So, next time you're chatting with someone, consider using one of these synonyms instead of the usual GKY!