1. making something individual or specific to a particular person
Usage: British spelling; present participle of personalise
2. taking something as a personal attack or making it about oneself
Usage: British spelling

Examples

• She is personalising her laptop with custom stickers.
• The company is personalising their marketing emails for each customer.
• He keeps personalising every criticism at work.
• The teacher is personalising the lesson plans for different learning styles.
• Stop personalising everything – it’s not about you.
• They are personalising the wedding invitations with handwritten notes.
• She has a habit of personalising professional feedback.