Invisible/ɪnˈvɪzəbl/ Definition 1 of 5Pro Tip 1/2Beyond Sight Refers to things that exist but cannot be seen, like air or emotions. Love is invisible, but it can be felt deeply. Pro Tip 2/2Figurative Use Sometimes used metaphorically to express items overlooked or ignored. The janitor did his job so well, he seemed invisible to the staff.