1
general::
conspire against sth
( also conspire to do sth )
If events or conditions conspire against something or conspire to do something, they combine in such a way that they spoil your plans
• The weather had conspired to ruin their day out.
• I'd planned a romantic evening together, but circumstances conspired against it - friends arrived unexpectedly and then Dave was called out to an emergency.
Cambridge-Phrasal Verbs