noun-modifying (irregular)
quadrennial; recurring every four years
Used as a prenominal modifier for events, plans, or periods that occur or span four years. Common in official contexts like 四か年計画 (four-year plan).
The city announced a new four-year plan.
This four-year contract expires next month.
Standard kanji-kana mixed spelling using the hiragana counter か.
Formal or official spelling using the kanji 箇 for the counter.
Variant using the katakana カ for the counter.
Variant using the small katakana ヵ for the counter.
Variant using the small katakana ヶ for the counter.
Variant using the full-width katakana ケ for the counter.
Variant using the Arabic numeral 4.
Variant using the Arabic numeral 4 and the kanji 箇.
Variant using the Arabic numeral 4 and the katakana カ.
Variant using the Arabic numeral 4 and the small katakana ヵ.
Variant using the Arabic numeral 4 and the small katakana ヶ.
Variant using the Arabic numeral 4 and the full-width katakana ケ.
Compound of 四 (four) + the counter か年 (years), where か is a counter suffix derived from 箇. The reading よん is the on'yomi of 四, and ねん is the on'yomi of 年.