bollix

[bol-iks] /ˈbɒl ɪks/
verb (used with object), Informal.
1.
to do (something) badly; bungle (often followed by up):
His interference bollixed up the whole deal.
noun
2.
a confused bungle.
Also, bolix, bollox.
Origin
1930-35; variant of ballocks
Examples from the web for bollix
  • My main beef with you academic types that study this bollix is that you perpetuate victimhood for people of color.
  • Because, where it was now, if he crossed his legs too fast it would cut the bollix clean off him.
  • It can bollix up military preparations and so forth.
British Dictionary definitions for bollix

bollocks

/ˈbɒləks/
plural noun
1.
another word for testicles See testicle
2.
nonsense; rubbish
interjection
3.
an exclamation of annoyance, disbelief, etc
4.
the bollocks, the dog's bollocks, something excellent
verb (usually foll by up)
5.
to muddle or botch
Usage note
Both its anatomical senses and its various extended senses nowadays have far less impact than they used to, and seem unlikely to cause offence, though some older or more conservative people may object. The fact that shops displaying the Sex Pistols' album containing this word were charged with offences defined in 19th-century Indecent Advertisement and Vagrancy Acts now seems hard to credit
Word Origin
Old English beallucas, diminutive (pl) of beallu (unattested); see ball1
Word Origin and History for bollix
v.

"bungle," respelling (perhaps euphemistic) of bollocks, plural of bollock "testicle," from Old English beallucas "testicles," from Proto-Germanic *ball-, from PIE *bhel- (2) "to inflate, swell" (see bole). Related: Bollixed; bollixing.