Peering out is a phrase that refers to looking through an opening or searching for something in a cautious manner. There are several synonyms that one can use instead of peering out. One such word is gazing, which implies looking intently, directly, and fixedly at something. Another synonym is scanning, which refers to taking a comprehensive look at something, often with a view to identifying a specific object or detail. Glancing is another word, and it refers to taking a quick look or a brief survey of something. Finally, observing is an alternative that implies paying close attention and taking heed of what one sees.