- Accommodating attitude or opinion, as in receptivity to new ideas, behaviors, cultures, peoples, environments, experiences, etc., different from the familiar, conventional, traditional, or one's own.
- The degree to which a person, group, organization, institution, or society exhibits this liberal attitude or opinion.
- Lack of secrecy; candour, transparency.
- (computing, education) degree of accessibility to view, use, and modify in a shared environment with legal rights generally held in common and preventing proprietary restrictions on the right of others to continue viewing, using, modifying and sharing.
- (systems theory) The degree to which a system operates with distinct boundaries across which exchange occurs capable of inducing change in the system while maintaining the boundaries themselves.
- Italian: apertura
- Italian: trasparenza