0 to trust someone or something and know that that person or thing will help you or do what you want or expect him, her, or it to do: --
1 to need something, or need the help and support of someone or something, in order to live or continue as before: --
Elaine depends upon Bob completely for her happiness.
Charities depend on people supporting their activities.
In the past, navigation depended on a knowledge of the positions of the stars.
A country's future prosperity depends, to an extent, upon the quality of education of its people.
Many species of tree depend on the wind for pollination.
Most of the local population depend on fishing for their income.
I can't employ him in the shop if I can't depend on him to act responsibly.
She was a fiercely independent lady who refused to depend on anyone.