noun
word with difficult-to-read kanji
A linguistic term for words whose kanji are hard to read, often due to irregular readings, rare characters, or lack of phonetic clues.
「海月」は難読語の一つで、「くらげ」と読む。
"海月" is one example of a word with difficult-to-read kanji; it is read "kurage".
日本語学習者にとって、難読語は大きな壁になることがある。
For learners of Japanese, words with difficult-to-read kanji can be a major hurdle.
Compound of 難読 (nandoku, 'difficult to read') + 語 (go, 'word'). The term is a modern linguistic coinage.