First opened Thursday, April 20, 2006
不規則
ふきそく
Pitch accent: We don't have the data for this section. No accent list gives this spelling and reading, or the two we check against disagree.
irregularity, unsteadiness
Fukisoku is 不 (fu-, “un-; non-”) plus 規則 (kisoku, “rule”).
Taken apart
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In a sentence
生理が不規則です。
My menstrual cycle is irregular.
彼は出席が不規則だ。
His attendance is irregular.
Sentences are from Tatoeba (CC BY 2.0 FR), picked by fixed rules from a dated export and shown unchanged. Nobody has reviewed them one by one.
What Wiktionary says
Quoted line by line from Wiktionary's Etymology section for this reading, taken from one dated dump so it can't change underneath us. Nothing below is paraphrased.
- “Compound of 不(ふ) (fu-, “un-; non-”) + 規(き)則(そく) (kisoku, “rule”).”
Source: Wiktionary: 不規則 (dump of 2026-09-02), available under CC BY-SA 4.0. Reading, meaning and part of speech from JMdict, and kanji readings from KANJIDIC2 (EDRDG).
What the labels mean
- 漢語 Sino-Japanese
- Words built from Chinese-derived morphemes — borrowed from Chinese or coined in Japan out of Chinese parts — read with on'yomi.
- Compound
- Two or more words or stems joined into one.