bugger

Etymology 1

From Middle English bougre (“heretic”), from Old French bougre, from Medieval Latin Bulgarus (“Bulgar”), from Old Church Slavonic блъгаринъ (blŭgarinŭ, “Bulgarian”), used in designation of heretics (especially the Bogomils, who arose around the 10th century AD in the First Bulgarian Empire), to whom various sexual practices such as anal sex were ascribed. Doublet of Bulgar.

noun

1. (obsolete) A heretic.
2. (UK law) Someone who commits buggery; a sodomite.
   The British Sexual Offences Act of 1967 is a buggers’ charter.
3. (slang, derogatory, UK, Ireland, Australia, New Zealand, Hawaii, South Africa) A foolish or worthless person or thing; a despicable person.
   He's a silly bugger for losing his keys.
   The bugger’s given me the wrong change.
   My computer's being a bit of a bugger.
   1928, Frank Parker Day, Rockbound, Gutenberg Australia eBook #0500721h, “I’ll take it out on dat young bugger,” he thought viciously.
   Here the cheers and shouts of the gallery were interrupted by a shabby little man in the back row who yelled out with piercing distinctness: “Don't matter what you call ’im now, George. The bugger’s dead.” 1947, James Hilton, So Well Remembered, Gutenberg Australia eBook #0600371h
4. (slang, UK, Ireland, Australia, New Zealand, Hawaii, South Africa) A situation that is aggravating or causes dismay; a pain.
   So you're stuck out in the woop-woop and the next train back is Thursday next week. Well, that's a bit of a bugger.
5. (slang, UK, Ireland, Australia, New Zealand, Hawaii, South Africa) Someone viewed with affection; a chap.
   How are you, you old bugger?
   1946, Olaf Stapledon, Arms Out of Hand, in Collected Stories, Gutenberg Australia eBook #0601341, Good luck, you old bugger!
   1953 February-March, Henry Beam Piper, John Joseph McGuire, Null-ABC, in Astounding Science Fiction, Gutenberg eBook #18346, “And if Pelton found out that his kids are Literates—Woooo!” Cardon grimaced. “Or what we've been doing to him. I hope I’m not around when that happens. I’m beginning to like the cantankerous old bugger.”
6. (slang, dated) A damn, anything at all.
   I don't give a bugger how important you think it is.
7. (slang, UK, Ireland, Australia, New Zealand) Someone who is very fond of something
   I'm a bugger for Welsh cakes.
8. (slang, UK, US) A whippersnapper, a tyke.
   What is that little bugger up to now?

verb

1. (transitive, vulgar, Britain, Ireland, Australia, New Zealand) To have anal sex with, sodomize.
   To be buggered sore like a hobo's whore (Attributed to Harry Mclintock's 1920s era Big Rock Candy Mountain)
2. (transitive, slang, vulgar in, Britain, Ireland, Australia, New Zealand) To break or ruin.
   This computer is buggered! Oh no! I've buggered it up.
3. (transitive, slang, vulgar) Expressing contemptuous dismissal of the grammatical object.
   Bugger Bognor. (Alleged to be the last words of King George V of the United Kingdom in response to a suggestion that he might recover from his illness and visit Bognor Regis.)
   Oh, bugger this! I'm going out for a beer instead.

intj

1. (slang, Britain, Australia, New Zealand, vulgar) An expression of annoyance or displeasure.
   Bugger, I've missed the bus.
   Dear Lord, forgive me for what I am about to, ah, say in this magnificent place of worship. Bugger. Bugger! Bugger-bugger-bugger-bugger! 1994, Richard Curtis, Four Weddings and a Funeral, spoken by Charles (Hugh Grant)

Etymology 2

From bug (noun) + -er.

noun

1. One who sets a bug (surveillance device); one who bugs.