General Flexibility:
* Flexible: This is the most common and straightforward synonym.
* Supple: Suggests a smooth, yielding quality.
* Bendable: Emphasizes the ability to bend without breaking.
* Yielding: Implies giving way to pressure.
* Ductile: Used for materials that can be drawn into wires.
* Malleable: Similar to ductile, but used for materials that can be shaped by hammering.
For People:
* Adaptable: Able to adjust to different situations.
* Tractable: Easy to manage or control.
* Amenable: Willing to accept or comply with something.
* Compliant: Obedient and willing to follow instructions.
* Submissive: Ready to accept the authority or will of another.
For Ideas or Plans:
* Flexible: Open to change or modification.
* Adjustable: Capable of being adapted.
* Changeable: Susceptible to being altered.
* Negotiable: Open to discussion and compromise.
The best synonym will depend on the specific context and the nuance you want to convey.