to overexert oneself; to make too-strenuous efforts

to be excessively loaded with work and cares; to work too hard

any of the metallic elements in the central block of the periodic table, including the transition metals

excessive concern; obsession

excessive or unnecessary medical treatment

to respond to a situation or stimulus more strongly or intensely than is appropriate or necessary

extreme stress, nervousness, or excessive physical and mental tension

To work beyond one's strength or capacity; the state of working too much