beleaguer

beleaguer    [Bih-lee-ger]

verb. to annoy persistently

"The head of the World Health Organization has praised beleaguered South Korean officials and exhausted health workers, saying their efforts to contain a deadly MERS virus outbreak have put the country on good footing and lowered the public risk."
"The European Central Bank was expected to decide this week whether to extend further emergency funding to Greece’s beleaguered banks."
"Microsoft is putting Spartan, its new browser, at the center of Windows 10 to replace the old, weak, and beleaguered Internet Explorer."

http://www.vocabulary.com/dictionary/beleaguer