bouziller

A very common alternate spelling of bousiller (to botch or wreck something), found regularly in 20th-century French literature and casual writing. Same familiar meaning and register as bousiller — not a separate word.

• Il a bouzillé son téléphone en le faisant tomber. — He wrecked his phone by dropping it.
• Ne bouzille pas tout avant même de commencer ! — Don't mess everything up before you've even started!
• Les deux orthographes, bousiller et bouziller, sont acceptées. — Both spellings, bousiller and bouziller, are accepted.

Bousiller (with an s) is the more standard modern spelling — bouziller (with a z) is a well-attested variant, not a mistake, but a learner is more likely to encounter the s-spelling in dictionaries.