UNSEEN
ADJECTIVES
► INVISED invisible, unseen → L16 obs.
► SIGHTLESS invisible, unseen, dark; impenetrable by vision → 1589
NOUNS
► HEAL an unseen place; a hidden spot; shelter → 1691 Eng. dial.
► SNAKE IN THE BAG something one buys or trades sight unseen → 1970 Amer. dial.
Lexicophilia 