黒い
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Base i-adjective form ending in 『い』. Describes the color black or dark shades.
Theme

At a clothing store, User and their friend Yuta are picking out a new jacket, discussing color preferences.

黒い

くろい

black

Core Language Building BlocksColors

Memory Hook

Imagine a black cat crossing your path. You point and say, 『黒い!』 (kuroi, 'black'). 'Kuro-i!' → as black as a crow!

Cultural Note

In Japan, black is often associated with formality and elegance, seen in traditional clothing like 『着物』 (kimono, 'kimono') and 『喪服』 (mofuku, 'mourning attire'). It's also used in art and design for contrast and depth.

Forms

Base: 黒いBase i-adjective form ending in 『い』. Describes the color black or dark shades.
Negative: 黒くないDrop 『い』 → add 『くない』 (kunai, negative) → 『黒くない』 (kurokunai).
Past: 黒かったDrop 『い』 → add 『かった』 (katta, past) → 『黒かった』 (kurokatta).
Adverbial: 黒くDrop 『い』 → add 『く』 (ku, adverbial) → 『黒く』 (kuroku).
Comparative: より黒いComparative formed with modifier 『より』 (yori, 'more than') + base adjective.
Superlative: 一番黒いSuperlative formed with 『一番』 (ichiban, 'number one / Most') + adjective.