Verb
To regard with passionate affection.
To pay overt attention to, as from sycophancy or intense interest.
They hung upon his every word.
(military) To hover around.
to hang upon the flanks of a retreating enemy
(idiomatic) To depend upon.
Synonym: hang on
Everything hangs upon whether the boss agrees.
Great talents are the most lovely and often the most dangerous fruits on the tree of humanity. They hang upon the most slender twigs that are easily snapped off. Carl Jung
Shall the prejudices and paralysis of slavery continue to hang upon the skirts of progress? How long will those who rejoice that slavery no longer exists cherish or tolerate the incapacities it put upon their communities? Benjamin Harrison
In days when the public safety is imminently threatened, and the fate of a nation may hang upon a single act, we owe frank speech, above all other men, to him who is highest in authority. I shall speak to you as man to man. Robert Dale Owen
Every man should support himself, and not hang upon another. Spanish Proverb