The word "geeked" is a slang term commonly used to describe someone who is excited or enthusiastic about something, particularly technology, movies, or gaming. As a substitute for this word, there are several synonyms that can be used in its place, including thrilled, pumped, stoked, hyped, or jazzed. These words all convey the same sense of excitement and eagerness, and can be used interchangeably with "geeked" in casual conversation. Additionally, words like enthusiastic, passionate, and fervent can also be used to describe someone who is deeply invested in a particular hobby or interest. Overall, there are plenty of options available to replace the word "geeked" in a conversation or written work.