未知

みち

not yet known

JLPT N1

Character Breakdown

Meaning and Usage

"未知" (みち) means "unknown" or "not yet known." It is often used in formal or academic contexts to describe things that have not been discovered, understood, or identified yet.

Common Contexts

You will frequently see "未知" used in scientific, medical, or exploratory contexts, such as "未知の病気" (unknown disease) or "未知の世界" (unknown world).

Collocations and Patterns

  • 未知の + noun: used to describe something unknown or unexplored (e.g., 未知の領域 - unknown territory).
  • 未知数 (みちすう): an unknown number or variable, often in math or statistics.

Register and Nuance

"未知" is a formal word and less common in casual conversation. It conveys a sense of mystery or lack of information about the subject.

Common Mistakes

Learners sometimes confuse "未知" with "未確認" (unconfirmed) or "不明" (unclear). "未知" specifically means something has not been known or discovered yet, not just unconfirmed or unclear.

Example Sentences

このくすりのふくさようはまだみちだ。

The side effects of this medicine are still unknown.

みちのせかいにちょうせんするのはゆうきがいる。

It takes courage to challenge an unknown world.

みちのびょうきにたいするけんきゅうがすすんでいる。

Research on unknown diseases is progressing.