bol·lix 
/ˈbɑ:lɪks/ verb
bol·lix·es; bol·lixed; bol·lix·ing /ˈbɑ:lɪks/ verb [+ obj] US, informal : to make mistakes in doing (something) : to upset or ruin (something)
▪ That delay has bollixed our schedule. — usually + up ▪ I bollixed up my income tax form and had to pay a penalty. ▪ That one delay has bollixed up [=messed up] my whole week.
▪ That delay has bollixed our schedule. — usually + up ▪ I bollixed up my income tax form and had to pay a penalty. ▪ That one delay has bollixed up [=messed up] my whole week.
