When greeting someone, it's always nice to have a variety of ways to say "hi." Some synonyms for "say hi" include "greet," "welcome," "salute," "acknowledge," "address," "hail," "speak," "voice," "propose a toast," "give a wave," "nod in acknowledgement," "gush," "rush up to," "approach," "introduce oneself," "flash a smile," "make contact," "exchange pleasantries," "start a conversation," "offer a friendly greeting," "extend a warm welcome," and "beam a hello." Having a broad range of ways to say hello can make meetings and social events more interesting and enjoyable.