General terms:
* Sag: This is a very common and straightforward term for bending or drooping downwards.
* Droop: Similar to sag, but often implies a more pronounced downward bend.
* Slump: Suggests a sudden and heavy downward movement, often associated with tiredness or defeat.
More specific terms:
* Cave in: This suggests a collapse or inward buckling, often under pressure.
* Yield: This implies a gradual bending or giving way under pressure.
* Deflect: This refers to a change in direction, often caused by an external force.
Figurative terms:
* Wilt: Can be used metaphorically to describe a fading or loss of energy.
* Plunge: Implies a sudden and forceful downward movement.
The best word to use depends on the specific situation and the nuance you want to convey.