単一

たんいつ

single, simple, sole

JLPT N1

Character Breakdown

Meaning and Usage

The word "単一" (たんいつ) means "single," "simple," or "sole." It is often used to emphasize that something consists of only one element or factor, without any mixture or complexity. This word is common in formal or academic contexts, such as scientific explanations, technical descriptions, or analytical discussions.

Common Collocations

  • 単一の原因 (たんいつのげんいん): single cause or reason
  • 単一素材 (たんいつそざい): single material
  • 単一視点 (たんいつしてん): single perspective

These collocations highlight the focus on one element or factor exclusively.

Usage Notes

When using "単一," speakers imply exclusivity or simplicity. It is often contrasted with words like "複数" (multiple) or "多様" (diverse).

Be careful not to confuse "単一" with "単純" (たんじゅん), which means "simple" but can imply lack of complexity or sophistication, whereas "単一" stresses singularity or uniqueness.

"単一" is more formal and less common in casual conversation but important in written and professional Japanese.

Example Sentences

このもんだいはたんいつのげんいんによってひきおこされた。

This problem was caused by a single reason.

たんいつのしてんだけでものごとをはんだんするのはきけんだ。

It is dangerous to judge things from a single perspective alone.

このせいひんはたんいつそざいでつくられているため、リサイクルがかんたんだ。

This product is made from a single material, so recycling is easy.