IPA: /kəˈluːsɪv/
KK: /kəˈluːsɪv/
Acting together secretly to achieve a dishonest or illegal purpose.
The companies were accused of collusive behavior to fix prices.
Collusive → It is formed from "col-" (meaning together) and "ludere" (meaning to play). The word describes a situation where parties are playing together in a secretive or deceitful manner, often to achieve a common goal at the expense of others.
Think of people 'playing together' ('col-' means together and 'ludere' means to play') in a secretive way, which is what collusive means.