~かろう
意味
A literary auxiliary indicating the writer's conjecture or supposition, not based on any particular evidence. It is the written equivalent of だろう for adjectives.
かろう is a formal, literary form used primarily in written Japanese to express conjecture. It attaches to the stem of い-adjectives (replacing the final い) and to certain negative forms. For example, 高い becomes 高かろう and ない becomes なかろう. This form is rarely used in everyday conversation and is largely confined to essays, literary works, newspaper editorials, and formal speeches. It carries an older, more dignified tone compared to だろう. Learners should recognize this form in reading but use だろう or でしょう in most practical situations.
例文
- この計画の実現は難しかろう。
- 彼の苦労は並大抵ではなかろう。
- 結果がどうであれ後悔はなかろう。
使い方ガイド
場面: written, literary, formal speech
トーン: contemplative
正しい言い方
- いくら説明しても理解しがたかろう。
- この改革には反対も多かろう。
- 事情は複雑であり、簡単には解決できなかろう。
避ける言い方
- 明日は寒いかろう。(Using かろう in casual conversation — it sounds overly literary and unnatural in speech) → 明日は寒いだろう。
- この映画は面白いかろう。(Attaching かろう to the full adjective instead of the stem — must drop い first) → この映画は面白かろう。
起源と歴史
Derived from the classical Japanese conjectural ending かろう, which was the volitional form of the adjective auxiliary かり. It persists in modern formal writing as an archaic conjecture marker.
文化的背景
世代: All ages
社会的背景: Universal
関連フレーズ
フラッシュカード、クイズ、音声発音、間隔反復