General synonyms:
* Observe
* View
* Behold
* Witness
* Glance
* Notice
* Perceive
* Detect
* Recognize
* Discern
More specific synonyms:
* Look at: For a direct act of seeing something.
* Gaze upon: For a prolonged and attentive look.
* Spot: For quickly noticing something.
* Catch sight of: For suddenly becoming aware of something.
* Glimpse: For a brief view of something.
* Survey: For examining something thoroughly.
* Inspect: For carefully examining something.
* Scrutinize: For examining something very closely.
Figurative synonyms:
* Understand: For comprehending something.
* Imagine: For picturing something in your mind.
* Realize: For becoming aware of something.
The best synonym to use depends on the specific context and the nuance you want to convey.