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Why JLPT N1 learners mix up 不明 (ふめい, “unknown; obscure; indistinct; uncertain; ambiguous; ignorant; lack of wisdom; anonymous; unidentified”) and あやふや (あやふや, “uncertain, vague, ambiguous”).
These are semantic synonyms for 'unclear.' Both 不明 (unknown/obscure) and あやふや (vague/ambiguous) describe things that lack definition, making the nuanced difference in 'knowledge' vs 'clarity' difficult for learners.
On JLPT N1, this pair shows up as a vocabulary meaning question. You see one word and pick its English equivalent from four options — one of which will be the other word in this pair, chosen as a distractor precisely because of the overlap.
Reading the explanation is step one. Targeted practice is what actually moves a confusion pair out of your weak list. Free, no signup needed to try.
Practice N1 confusion pairsSpot a mistake in this explanation? Email us. Explanations are AI-generated and human-reviewed; corrections welcome.