木漏れ日
こもれび
komorebi
= sunlight filtering through leaves; dappled light through trees
木漏れ日 describes the fleeting, dappled patches of sunlight that appear when sunlight filters through the gaps between tree leaves — a phenomenon so specific to the experience of standing beneath a canopy that Japanese gave it a single word where English needs an entire phrase.
木漏れ日 refers exclusively to sunlight that has passed through the foliage of trees, creating shifting, fragmented pools of light on the ground or on surfaces below. The word captures not just the light itself but the interplay of shadow and brightness produced by moving leaves. It carries a quietly contemplative tone and is used in both spoken and written Japanese to evoke a sense of calm and natural beauty. There is no casual-versus-formal distinction in how the word is used; it appears equally in poetry, travel writing, daily conversation, and Instagram captions. What matters is the specificity: 木漏れ日 cannot refer to sunlight streaming through a window or falling in an open field — the light must be filtered through tree branches and leaves.
Learners sometimes use 木漏れ日 interchangeably with 日差し (hizashi, general sunlight falling on a surface) or 日光 (nikkō, sunlight or sunshine in a broad sense), but these are not interchangeable. 日差し and 日光 can describe sunlight in open spaces, through windows, or on a cloudless beach — situations where 木漏れ日 would be wrong. 木漏れ日 requires trees. A second common slip is treating it as a verb phrase; it is a standalone noun and does not conjugate. To say “I saw komorebi,” say 木漏れ日を見た (komorebi o mita).
木漏れ日 is a compound of three elements. 木 (き / ko) means “tree” or “wood.” 漏れ (もれ) is the stem of the verb 漏れる (moreru), meaning “to leak” or “to filter through.” 日 (ひ / bi) means “sun” or “sunlight.” Together, the kanji paint the image literally: sunlight leaking through trees. The voiced sound change from ひ (hi) to び (bi) in the final syllable is a regular phonetic process called rendaku, which softens the joining of compound elements.
Everyday use
公園のベンチに座って、木漏れ日の中で本を読んだ。
Kōen no benchi ni suwatte, komorebi no naka de hon o yonda.
I sat on a bench in the park and read a book in the dappled sunlight filtering through the trees.
Casual / Social Media
今日のハイキング中に撮った写真。木漏れ日が最高だった。
Kyō no haikingu-chū ni totta shashin. Komorebi ga saikō datta.
Photos from today’s hike. The light through the trees was incredible.
Formal / Cultural context
木漏れ日の美しさは、日本人が古くから自然の中に見出してきた「間」の美学を体現している。
Komorebi no utsukushisa wa, Nihonjin ga furuku kara shizen no naka ni miidashite kita ‘ma’ no bigaku o taigen shite iru.
The beauty of komorebi embodies the aesthetic of ‘ma’ — the Japanese appreciation for negative space and transient moments — that the Japanese have long found in nature.
木漏れ日 is closely tied to the Japanese aesthetic concept of mono no aware — the bittersweet awareness that beautiful things are impermanent. The dappled light shifts with every breeze, never forming the same pattern twice, which is precisely what makes it worth noticing. This quality has made 木漏れ日 a recurring image in haiku and classical poetry, where a single moment of filtered light under a cedar or maple can anchor an entire poem’s emotional weight.
In contemporary Japanese culture, 木漏れ日 has become a staple caption on social media for photos taken in forests, shrine approaches lined with tall cryptomeria, or city parks in early morning. The word signals more than a lighting condition — it signals an intention to slow down and notice something fleeting. Shinrin-yoku (forest bathing) guides and wellness writers frequently invoke 木漏れ日 as one of the specific sensory details that makes time spent under a forest canopy restorative in a way that open-sky sunlight is not.