All common knowledge antonyms

adj common knowledge

• antiquated — If you describe something as antiquated, you are criticizing it because it is very old or old-fashioned.
• old-fashioned — of a style or kind that is no longer in vogue: an old-fashioned bathing suit.
• old — far advanced in the years of one's or its life: an old man; an old horse; an old tree.
• past — gone by or elapsed in time: It was a bad time, but it's all past now.
• uncommon — not common; unusual; rare: an uncommon word.
• contemporaries — existing, occurring, or living at the same time; belonging to the same time: Newton's discovery of the calculus was contemporary with that of Leibniz.