All words

First opened Monday, January 5, 2009

四角い

しかくい

  • flat (heiban)
  • middle-high (nakadaka): falls after mora 3

How to read it: a line over a kana means the voice is high there, and ↓ marks where it drops. A kana with no line is low. With no ↓ the pitch stays high to the end and does not drop even on a following particle (が, は).

square

JLPT N2Commonadjective (keiyoushi)漢語 · Sino-Japanese

四角い is formed as an -i adjective from 四角 (shikaku, “square, rectangle”).

Taken apart

No breakdown is shown for this word: Wiktionary's text for it doesn't give a split that spells the word and joins to its reading, and any other split would be a guess.

Written with 四角

In a sentence

  • 必要(ひつよう)なのは四角(しかく)いテーブルで、円卓(えんたく)ではない。

    We need a square table, not a round one.

    Tatoeba #85453, translation #318260

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.

  • “Formed as an -i adjective from noun and adjectival noun 四角 (shikaku, “square, rectangle”).”

Source: Wiktionary: 四角い (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.

Also opened on January 5

The words that opened on this day of the year in other years, oldest first. They share only the date: nothing else links them.

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Origins quoted from Wiktionary (CC BY-SA 4.0) via Kaikki.org; meanings & kanji from JMdict, KANJIDIC2 & KRADFILE (EDRDG, CC BY-SA 4.0) — how we check it