くまなく

く

ま

な

く

Meanings

1

all over; everywhere; in every corner

usually written using kana alone

Used when searching, looking, or spreading something thoroughly across an entire area, leaving no part untouched.

部屋へや

を

くまなく

調しら

べ

た

。

The police searched every corner of the room.

彼かれは世せ界かい中じゅうをくまなく旅たびした。

He traveled all over the world.

2

usually written using kana alone

Rare literary use, often describing light or visibility spreading everywhere without shadow. Modern Japanese more commonly uses 明るく or はっきり.

〈場ば所しょ〉を隈くまなく捜さがすto search a place thoroughly, leaving no corner unchecked
警けい察さつは家いえの中なかを隈くまなく捜さがした。
The police searched every corner of the house.
〈場ば所しょ〉を隈くまなく調しらべるto investigate or inspect a place thoroughly
森もりの中なかを隈くまなく調しらべたが、何なにも見みつからなかった。
We thoroughly examined the whole forest, but found nothing.
〈物もの〉を隈くまなく照てらすto light up something completely, without any shadow
満まん月げつが庭にわを隈くまなく照てらしていた。
The full moon lit up the garden completely, without a single shadow.

隅すみ々ずみ sense 1
隅々 is a noun meaning 'every corner', often used with まで (隅々まで), while 隈なく is an adverb that directly modifies a verb to stress thorough coverage.
あまねく sense 1
あまねく means 'widely' or 'universally' in formal, literary contexts, whereas 隈なく emphasizes leaving no spot or gap unchecked within a space.
残のこらずN2sense 1
残らず means 'without exception, all of it' and often applies to items or people, while 隈なく specifically stresses covering every part of a physical area.

くまなくUsage80%
Usually written in kana. The kanji spelling 隈なく is also used but less common.
隈くまなくUsage19%
Kanji spelling; 隈 means 'corner' or 'shadow', giving the literal sense of 'without a corner'.
隈くま無なくUsage1%
search-only kanji form
Search-only kanji form; not commonly used.

From 隈, “hidden, shaded, or out-of-the-way place,” and the adverbial negative なく. It therefore means leaving no hidden or overlooked place.