na-adjective, noun
Describes something that is logically clear, well-defined, or easy to understand, often used for explanations, memories, or reasoning. More formal than はっきり.
彼の説明は明晰で、誰にでも理解できた。
His explanation was clear and understandable to everyone.
明晰な頭脳の持ち主だ。
He has a lucid mind.
明瞭 also means 'clear' but often refers to visual or auditory clarity, while 明晰 emphasizes logical or intellectual clarity.
はっきり is a more casual and versatile adverb meaning 'clearly' or 'distinctly', used in everyday speech, whereas 明晰 is formal and often used in writing or intellectual contexts.
From Middle Chinese-derived kanji 明 (bright, clear) and 晰 (clear, distinct). The combination emphasizes clarity and distinctness.