Definition of bollix in US English:

bollix

verb

[with object]usually bollix something up
vulgar slang
  • Bungle (a task).

    mishandle, mismanage, mess up, make a mess of, botch, spoil, mar, ruin
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plural noun

vulgar slang

Pronunciation

bollix

/ˈbäliks//ˈbɑlɪks/