General Sense of Moving:
* Slide: This is a close synonym, often used for smoother movement on a surface.
* Glide: Similar to slide, but implies even more effortless movement.
* Scoot: This suggests a quick, informal movement.
* Creep: This implies slow, stealthy movement.
Loss of Control:
* Fall: This is the most direct synonym if "slip" implies losing balance.
* Tumble: Suggests a more uncontrolled, rapid fall.
* Stumble: Implies a momentary loss of balance.
Making a Mistake:
* Err: This is a formal synonym for making a mistake.
* Miscalculate: Implies an error in judgment.
* Overlook: Suggests failing to notice something.
* Blunder: This implies a serious or clumsy mistake.
Other possibilities:
* Escape: This can be used when something slips away unexpectedly.
* Slide by: This implies something passes unnoticed.
* Go unnoticed: This suggests something escapes detection.
To provide the most accurate synonym, please provide the context of the sentence you're working with.