1.
obvious at a glance, crystal clear
A four-character idiom meaning something is so clear that it can be understood immediately upon seeing it.
グラフを見れば結果は一目瞭然だ。
The results are obvious at a glance when you look at the graph.
差は一目瞭然で、説明の必要がない。
The difference is crystal clear; no explanation is needed.
写真を比べれば変化が一目瞭然だ。
The change is obvious at a glance when you compare the photos.
FOUR-CHARACTER IDIOM (四字熟語)
LITERAL MEANING: 一目 (one glance) + 瞭然 (clear, obvious) = Clear with one glance.
FORMS:
- 一目瞭然だ (predicative)
- 一目瞭然な＋noun (attributive - less common)
- 一目瞭然で (adverbial)
COMMON PATTERNS:
- 〜は一目瞭然だ (~ is obvious at a glance)
- 見れば一目瞭然 (obvious once you look)
- 比べれば一目瞭然 (obvious when compared)
ALTERNATIVE READING: Sometimes read as いちもくりょうねん, but いちもくりょうぜん is standard.
ENGLISH EQUIVALENTS:
- Crystal clear
- Plain as day
- Self-evident