四字熟語

Noun

 * 1)  a four-kanji set phrase

Usage notes

 * Opinions on what qualifies as a 四字熟語 vary considerably. The word 四字熟語 itself may be considered a 四字熟語 in a broader sense, but may not be so in a more narrow sense. Generally, a word is more likely to be considered a 四字熟語 if it is more idiomatic or has a longer history of usage.