unique and degree modifiers
The only one of its kind.
Unique comes from the Latin unus, “one,” and means the only one of its kind. Something is unique or it is not, so do not grade the word with very, more, most, rather, somewhat, quite, or relatively. Almost unique and nearly unique are correct, because almost and nearly measure how close something comes to having no equal; they do not grade unique. When you mean unusual, rare, or distinctive, use one of those words. See also absolute adjectives.
Examples
Use The binding is unique. (no other binding is like it)
Use The binding is almost unique. (almost measures how close it comes; it does not grade the word)
Use The binding is unusual. (the right word when the meaning is “uncommon”)
Avoid The binding is very unique. (one of a kind has no degrees; say very unusual)
Avoid This is the most unique shop in town. (only one shop can be unique; say most unusual)