Translation of "Unsteady" in French

I observed that his hands were unsteady.

Je notai que ses mains tremblaient.

Tom insisted he hadn't been drinking, but his slurred speech and unsteady gait gave him away.

Tom a insisté qu'il n'avait pas bu, mais son élocution et sa démarche instable le trahissait.

The gait of my friend was unsteady, and the bells upon his cap jingled as he strode.

Le pas de mon ami était mal assuré et les clochettes attachées à son chapeau sonnaient alors qu'il marchait.