The word "noticed" often means to observe or become aware. There are many synonyms that can be used in place of "noticed" to add variety to your writing. For example, you might use the words "perceived," "spotted," or "detected" instead of "noticed." Other options include "discerned," "recognized," or "witnessed." You might also consider using phrases like "took note of," "caught sight of," or "came across" instead of "noticed." By using different synonyms, you can add nuance and detail to your writing, making it more engaging and interesting to read.