19. The "Strong" Radical: 力
The English names of the 力 radical are "strong," "power," and "strength," directly reflecting the meanings of this autonomous kanji:
力 (74: power, ability; strength; force; influence; energy)
In ancient days the character looked more like this:
© Richard Sears
Bronze-script version.
According to Henshall in his newer edition, this shape might have represented an "arm and hand." Alternatively, he says, it may have depicted a "plow" and by association "agricultural work" and therefore "physical strength."
What Is the "Strong" Radical Called in Japanese?
The Japanese primarily call this radical ちから, which matches the Joyo kun-yomi of the 力 kanji. That name applies to the "strong" radical in these characters:
勢 (518: power (esp. with movement); situation; tendency; outward appearance)
努 (555: effort; exertion)
労 (610: labor; trouble; fatigue)
劣 (1928: inferior)
In all those cases the 力 is centrally located. By contrast, it slides to the right in most other Joyo kanji in which it is the on-duty radical. Here's a sampling:
助 (314: to help, rescue; assistant; auxiliary)
動 (362: to move)
勉 (390: effort; exertion; study)
功 (477: merit; success, achievement)
効 (671: effect)
励 (1919: to encourage; strive for; diligent)
This right-side radical is known as りきづくり, where リキ is one of two Joyo on-yomi of the 力 kanji (the other being リョク). As for づくり, that's the voiced version of つくり (旁: side), the name of a radical on the right side of a kanji. (For more on this, see the Radical Terms page and look at "Radical Positions." I'm referring to Position 2.)
Of the 23 Joyo kanji featuring an on-duty 力 radical, including the 力 kanji itself, only this oddball has the radical on the left side:
加 (431: addition, increase; participation; Canada)
Canada—always breaking the rules! The radical name ちから works in this case.
One draws 力 with two strokes. There are no variant shapes, though the radical does become skinny on the side of a kanji.
Photo Credit: Eve Kushner
Fun Patterns with 力
The 力 radical plays a role in an intriguing pattern. In more than half of the 23 kanji in this category, the radical combines with a Joyo kanji to form the character, as in this example:
加 (431: addition) breaks down as 力 + 口 (20: mouth).
Here's how the pattern plays out for 11 more kanji:
助 (314: to help) | 且 (1091: as well as) |
勝 (319: win) | 朕 (1603: the royal "we") |
動 (362: to move) | 重 (311: heavy) |
勉 (390: effort) | 免 (1849: exemption) |
功 (477: merit) | 工 (113: manufacturing) |
努 (555: effort) | 奴 (1638: guy) |
効 (671: effect) | 交 (115: association) |
勘 (1100: intuitive perception) | 甚 (1449: extremely) |
勲 (1191: outstanding achievement) | 動 (362: to move) |
勅 (1600: imperial decree) | 束 (1535: bundle) |
劣 (1928: inferior) | 少 (143: small quantity) |
In the next set, the kanji in the left column contain the non-Joyo characters in the right column:
勢 (518: power (esp. with movement)) | 埶 (art) |
劾 (1068: impeachment) | 亥 (sign of the wild boar) |
募 (1787: to collect) | 莫 (must not) |
勃 (2113: sudden) | 孛 (comet) |
Photo Credit: Eve Kushner