Unseen/ˌʌnˈsiːn/ Definition 1 of 4Pro Tip 1/3Beyond Perception Refers to things that can't be seen with the eyes, often because they're hidden or too small. Even in clear water, some unseen dangers lurk. Pro Tip 2/3Metaphorical Use Used to describe abstract concepts or emotions that cannot be physically observed. She fought with unseen courage against adversity. Pro Tip 3/3Implied Presence Implies the existence of something not currently visible or active. The fog concealed unseen spectators.