1. people or things that fall between two categories, groups, or positions; those who are neither one thing nor another
Usage: informal; plural form
2. students in a transitional year or grade level between two main educational stages
Usage: chiefly British; informal; plural form

Examples

• The inbetweeners struggled to find their place in the social hierarchy of the school.
• These products are marketed to inbetweeners—people who want something between budget and luxury options.
• The film follows a group of inbetweeners navigating their awkward teenage years.
• In the job market, inbetweeners with mixed experience often face unique challenges.
• The inbetweeners in the company felt caught between management and entry-level staff.
• She identified as one of the inbetweeners, not quite fitting into either cultural group.