bane of (one's) existence

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bane of (one's) existence

The source or cause of one's misfortune, unhappiness, frustration, or anxiety, usually used hyperbolically. I swear, this project is the bane of my existence. I've been working on it for months and still haven't made any real progress! Jane has been constantly annoying me all week. She's been the bane of my very existence!

the bane of somebody’s ˈlife/eˈxistence

a person or thing that makes somebody’s life unpleasant or unhappy: That car is always breaking down! It’s the bane of my life. OPPOSITE: a ray of sunshine

bane of one's existence, the

The agent of one’s ruin or misery; a thorn in the flesh. The earliest meaning of the noun bane was “murderer” and was so used in Beowulf (ca. a.d. 800). A somewhat later meaning was “poison,” which survives as part of the names of various poisonous plants, such as henbane or wolf’s bane. The current sense, an agent of ruin, dates from the late 1500s. Today it is almost always used hyperbolically, as in “The new secretary loses all my messages; she’s become the bane of my existence.”