Meaning
覚 clusters around one core idea: the mind coming alive. Its meanings span memorizing, remembering, sensing, feeling, and waking up. These may seem unrelated at first, but each describes the same shift — a move from not-knowing into awareness.
The character breaks into three parts: a roof (冖) at the top, crossed lines (爻) in the middle, and the radical 見 (to see) at the bottom. The image is of someone sitting still under shelter, eyes fully open. Ancient scribes used this to capture the precise moment of waking: stillness, sight, and awareness arriving together.
Modern Japanese draws on all of this. 覚 appears in words for memorizing study material, using the five senses, waking from sleep, and steeling yourself before something hard. Each context points back to the same movement: from unawareness into clarity.
覚 has 12 strokes and is taught in elementary school at Grade 4. It belongs to JLPT N2, appearing in intermediate to advanced vocabulary. Its radical is 見 (to see), visible in the lower portion of the character.
Readings
On'yomi (音読み) — Chinese-derived readings
The on'yomi reading is カク (KAKU). It appears in compound words (熟語, jukugo) of Chinese origin and in formal or academic vocabulary, rarely in isolation.
- 感覚 (kankaku) — sense, sensation, feeling (e.g., 痛みの感覚 = the sensation of pain)
- 自覚 (jikaku) — self-awareness, consciousness of one's own situation
- 覚悟 (kakugo) — readiness, mental preparation, resolve before difficulty
- 錯覚 (sakkaku) — optical illusion, misperception
- 幻覚 (genkaku) — hallucination, vision
- 覚醒 (kakusei) — awakening, arousal, stimulation
- 視覚 (shikaku) — sense of sight, visual perception
- 聴覚 (chōkaku) — sense of hearing, auditory perception
Kun'yomi (訓読み) — Native Japanese readings
There are three kun'yomi readings: おぼ.える (obo-eru), さ.ます (sa-masu), and さ.める (sa-meru). All three appear often in daily speech.
おぼ.える means to memorize or to remember — committing something to memory through repetition or lived experience.
- 覚える (oboeru) — to memorize, to remember, to learn
- 覚え書き (oboegaki) — memorandum, written note, aide-mémoire
さ.ます is the transitive form: to cause someone to wake up or to sober someone up. An external force brings the awareness.
- 目を覚ます (me wo samasu) — to wake someone up (transitive), to open one's eyes
- 酔いを覚ます (yoi wo samasu) — to sober up
さ.める is the intransitive counterpart — waking on one's own, or becoming sober or disillusioned without outside help.
- 目が覚める (me ga sameru) — to wake up (intransitive), to come to one's senses
- 夢から覚める (yume kara sameru) — to wake from a dream, to be disenchanted
Common Words & Compounds
Key compounds grouped by meaning:
Memory and Learning:
- 覚える (oboeru) — to memorize, to remember
- 覚え書き (oboegaki) — memorandum, written note
- 丸覚え (maru oboe) — rote memorization, memorizing word-for-word
Awakening and Consciousness:
- 目覚める (mezameru) — to wake up, to become aware
- 目覚まし (mezamashi) — alarm clock; also: eye-opening, remarkable
- 覚醒 (kakusei) — awakening, becoming alert, stimulation
- 自覚 (jikaku) — self-awareness, being conscious of one's own state
Five Senses:
- 感覚 (kankaku) — sense, sensation, feeling
- 視覚 (shikaku) — sense of sight
- 聴覚 (chōkaku) — sense of hearing
- 触覚 (shokkaku) — sense of touch
- 嗅覚 (kyūkaku) — sense of smell
- 味覚 (mikaku) — sense of taste
Perception and Resolve:
- 覚悟 (kakugo) — resolve, readiness, mental preparation
- 錯覚 (sakkaku) — illusion, misperception
- 幻覚 (genkaku) — hallucination
- 先覚 (senkaku) — pioneer, enlightened forerunner
Example Sentences
この単語を覚えるのに三日かかった。
Kono tango wo oboeru no ni mikka kakatta.
It took me three days to memorize this word.
朝、目が覚めたら雪が降っていた。
Asa, me ga sametara yuki ga futte ita.
When I woke up in the morning, it was snowing.
彼女は音楽に対する感覚が鋭い。
Kanojo wa ongaku ni taisuru kankaku ga surudoi.
She has a sharp ear for music.
試験に合格する覚悟で勉強した。
Shiken ni gōkaku suru kakugo de benkyō shita.
I studied with the resolve to pass the exam.
あの建物が動いているように見えるのは錯覚だ。
Ano tatemono ga ugoite iru yō ni mieru no wa sakkaku da.
The building only looks like it's moving — it's an optical illusion.
子供の頃に覚えた歌は忘れにくい。
Kodomo no koro ni oboeta uta wa wasure nikui.
Songs you learned as a child are hard to forget.
目覚ましをかけ忘れて、遅刻してしまった。
Mezamashi wo kake-wasurete, chikoku shite shimatta.
I forgot to set the alarm and ended up being late.
自覚がないまま失礼なことを言ってしまうことがある。
Jikaku ga nai mama shitsurei na koto wo itte shimau koto ga aru.
Sometimes you say something rude without even being aware of it.
長年の夢から覚め、現実を見つめ直した。
Naganen no yume kara same, genjitsu wo mitsumenaoshita.
Waking from a long-held dream, I took a hard look at reality.
味覚は年齢とともに変化することが多い。
Mikaku wa nenrei to tomo ni henka suru koto ga ōi.
The sense of taste often changes with age.
Memory Tip
Picture someone sitting under a roof (冖), eyes open (見), the last threads of a dream breaking apart above them (爻). That split second between sleep and full awareness — that is 覚.
From that image, every meaning follows naturally. Memorizing (覚える) is the mind holding onto something new. The five senses (感覚, 視覚, 聴覚) are the mind taking in the world. Waking up (目が覚める) is the eyes opening into that same moment. And resolve (覚悟) is the mind fully awake to what lies ahead. 見 — the act of seeing — sits right at the bottom of the character, anchoring all of it.