虚 means “empty, void, false”

きょ · kyo

Also: emptiness, unpreparedness, crack

Kun'yomi (Japanese reading)
むなしい, うつろ
On'yomi (Chinese reading)
キョ, コ

JLPT N1 · Taught in secondary school · 11 strokes

The story

A tiger's head (虍) over an empty frame (业): picture a tiger skin with nothing inside. 虚 is hollowness: 虚しい is feeling empty, 謙虚 is humble, emptied of pride, and 虚偽 is falsehood, as in a 虚偽の申告, a false statement.

Used in 謙虚 (kenkyo, humble/modest), 虚しい (munashii, empty/futile), and 虚偽 (kyogi, falsehood)

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.