Surveillance is a crucial aspect of ensuring the safety and security of people, property, and information. However, constantly using the word "surveil" can become repetitive and monotonous. Therefore, it's important to be familiar with synonyms for the word "surveil" to avoid making your writing seem dull. Some alternatives to the word surveil include monitoring, watching, observing, tracking, and guarding. Each of these words can help express the same meaning as surveil while making your writing more interesting and varied. It's always recommended to keep a thesaurus handy to look for additional synonyms and to enhance your overall writing style.