For the act of walking unsteadily:
* Mangiwi: This means to walk unsteadily, like a child learning to walk.
* Tumikwas: This implies a more pronounced swaying or wobbling.
* Malata: This suggests weakness or instability in the legs.
For the act of being about to fall:
* Humahagakhak: This refers to the act of falling or collapsing.
* Nahihirapan sa paglakad: This means having difficulty walking, which can imply a tottering gait.
For the act of being unstable or about to fail:
* Maging maluwag: This means becoming loose or unstable, which can be used to describe a structure or system that is tottering.
* Malapit nang bumagsak: This means being close to collapsing or failing, which can be used to describe a situation that is tottering on the brink.
The best translation will depend on the specific context and nuance you want to convey.