Kanji Radicals: Meaning, Positions and 10 Examples
Learn how dictionary radicals differ from other kanji components. See seven position names, ten example forms and complete words with readings.
What kanji radicals are
A dictionary radical, 部首 (ぶしゅ, bushu), gives a kanji its classification heading. A character can contain several components, but not every visible component is the radical assigned to that dictionary entry. KanjiPedia explains its classification policy and distinguishes meaning-bearing and sound-bearing components in character explanations.
Use the index of the dictionary you are consulting. KanjiPedia generally follows the Kangxi dictionary for radical classification; that does not establish one universal analysis for every dictionary. For the wider reading context, see the kanji topic hub.
Use parts to compare characters
Compare 海 (うみ, umi, sea) and 池 (いけ, ike, pond). Both contain the water form 氵 (さんずい, sanzui). Noticing the shared shape is a useful comparison task. It does not give you the complete meaning or reading of an unfamiliar word.
Identify a familiar part before studying the whole character. Use it as a memory cue, then check whether you can recall the complete word and its reading.
Where radicals sit: the position names
The position names below describe where a part sits in a character. Use them to discuss the layout; a position name alone does not tell you which component a dictionary selects as its radical.
Here are seven position names used to describe character parts:
| Japanese | Romaji | Position |
|---|---|---|
| へん | hen | part on the left |
| つくり | tsukuri | part on the right |
| かんむり | kanmuri | part at the top |
| あし | ashi | part at the bottom |
| かまえ | kamae | part that encloses another |
| たれ | tare | part extending across the top and down the left |
| にょう | nyō | part extending down the left and underneath |
Compare にんべん (ninben, the person-side form) and てへん (tehen, the hand-side form). The names help describe the part and its position. Check the actual form and dictionary entry together.
Ten example forms and words
The following table gives ten example forms and words containing them. The forms can provide meaning clues, but the gloss is not a rule for every character containing that shape. The last column gives words or a labeled compound element, including the kana endings of verbs and adjectives.
| Form | Name | Romaji | Meaning | Example words |
|---|---|---|---|---|
| 氵 | さんずい | sanzui | water | 海 (うみ, umi, sea), 池 (いけ, ike, pond) |
| 亻 | にんべん | ninben | person | 休む (やすむ, yasumu, to rest), 体 (からだ, karada, body) |
| 口 | くちへん | kuchihen | mouth | 味 (あじ, aji, taste), 呼ぶ (よぶ, yobu, to call) |
| 言 | ごんべん | gonben | word, speech | 話す (はなす, hanasu, to speak), 語 (ご, go, word or language in compounds) |
| 扌 | てへん | tehen | hand | 持つ (もつ, motsu, to hold), 押す (おす, osu, to push) |
| 木 | きへん | kihen | tree, wood | 林 (はやし, hayashi, woods), 村 (むら, mura, village) |
| 日 | ひへん | hihen | sun, day | 時 (とき, toki, time), 明るい (あかるい, akarui, bright) |
| 糸 | いとへん | itohen | thread | 紙 (かみ, kami, paper), 細い (ほそい, hosoi, thin) |
| 女 | おんなへん | onnahen | woman | 好く (すく, suku, to like), 姉 (あね, ane, older sister) |
| 心 | こころ / したごころ | kokoro / shitagokoro | heart, feeling (also appears as a bottom radical) | 思う (おもう, omou, to think), 心 (こころ, kokoro, heart) |
Compare the shared forms without treating them as complete word definitions. For example, 話す (はなす, hanasu, to speak) contains 言 (ごんべん, gonben, the speech-side form). Learn the word with its full spelling and reading.
How radicals hint at meaning
A familiar component can suggest a broad association. Treat it as a hypothesis to check, not a reliable prediction of an unfamiliar word. The actual dictionary definition and usage take priority.
A dictionary classification is not a complete character-origin explanation. Keep any history or sound-component claim separate and consult a source for that specific character.
A dictionary radical also does not supply a word reading. Compare 持つ (もつ, motsu, to hold) and 押す (おす, osu, to push), both containing 扌 (てへん, tehen, the hand-side form). Learn the written word and its reading together.
How to study with radicals
Start with words you are already learning. Identify one familiar component, check the whole word, and consult the dictionary radical when you need it for lookup. Add more components as they become useful rather than treating a complete index as a prerequisite.
Try this comparison routine:
- When you meet a new kanji, pause and look for a component you already recognize. Naming the part you know, such as 氵 (sanzui) or 亻 (ninben), gives the new character an anchor.
- Let the radical suggest a rough meaning, then check the actual meaning and reading against your study material. Confirm, do not assume.
- When a component is new to you, note it with the word that introduced it.
- Revisit words over separate sessions and check recall. A review schedule does not know the exact instant you would forget an item.
This is the rhythm a spaced-repetition flashcard practice is built for. The point is not to rush. The point is to let the repeating parts of the writing system reveal themselves slowly, one recognized component at a time, until a wall of characters turns into a set of familiar pieces you can read.
What to study next
This radicals lesson stands on its own. You can keep spotting 氵 and 亻 in any textbook. When you want a product for daily review, match the catalog to the job:
- Choose Inku if you want kanji lessons in the same app as kana, vocabulary and phrases. Inku teaches 960 kanji from N5 to N1. Inku gives memory cues and sample words, but it does not teach through a radical system.
- Choose WaniKani if you want a larger radical-based kanji path (about 2,000 kanji across 60 levels). WaniKani's prerequisites page recommends learning hiragana before you start.
Read the sourced Inku vs WaniKani comparison before you pick. Then choose the tool whose kanji coverage matches the job you actually want.
Common questions
What is a kanji radical?+
A kanji radical, 部首 (ぶしゅ, bushu), is a dictionary classification heading. A kanji can have several visible components; the radical assigned to its entry is not the name for every component. Check the dictionary when the classification matters.
How many kanji radicals are there?+
Check the radical index of the dictionary you use. KanjiPedia states that its classification generally follows the Kangxi dictionary. Do not treat one index as proof that every component or every modern dictionary uses the same classification.
Do radicals tell you how a kanji is pronounced?+
A dictionary radical is not a rule for deriving a word reading. 持つ (もつ, motsu, to hold) and 押す (おす, osu, to push) both contain the hand form 扌 (てへん, tehen), but their readings differ. Learn the complete written word with its reading.
Should beginners learn radicals before kanji?+
You can start by noticing components in words you already study. Check the dictionary radical when you need it for lookup. Memorizing an entire index is not a prerequisite for using these examples.
Related reading
- Inku vs WaniKaniCompare a radical-first kanji course with kanji inside a broader Japanese app.
- Kanji learning strategies that stickCombine radicals with mnemonics, vocabulary and reading to remember kanji longer.
- JLPT N5 vocabulary listPractice spotting radicals in the kanji of common beginner words.
- How to learn Japanese: the roadmapSee where kanji fits among kana, vocabulary, grammar and input.
