If "straddled" refers to physical position:
* Leaned: Implies a leaning towards one side.
* Slid: Implies movement to one side.
* Centered: Implies being positioned in the middle.
If "straddled" refers to a situation or decision:
* Chosen: Implies a clear choice of one side.
* Committed: Implies a firm dedication to one side.
* Aligned: Implies being clearly on one side.
* Supported: Implies being fully behind one side.
If "straddled" refers to an object:
* Fitted: Implies a close and secure fit.
* Attached: Implies being connected to one side.
* Connected: Implies being linked to one side.
Please provide more context about how "straddled" is used so I can give you a more accurate antonym.