The kanji 確 expresses the idea of certainty, definiteness, and assurance. It implies a firm grasp of something, a confirmed fact, or a reliable piece of information. It conveys a sense of being sure, established, and without doubt. It's about something that is solid, proven, and can be relied upon.

・On-yomi (音読み): カク (kaku) ・Kun-yomi (訓読み): たしか(tashika)

⚫︎ 確実 (kakujitsu) Translation: Certainty; reliability; sureness ⚫︎ 確認 (kakunin) Translation: Confirmation; verification ⚫︎ 確かめる (tashkameru) Translation: To confirm; to ascertain; to make sure

The kanji 確 is a phono-semantic compound (形声文字, keisei moji). The semantic component is 石 (ishi), meaning "stone" or "rock," which provides the meaning element of firmness and solidity. The phonetic component is 角 (kaku), indicating the sound and contributing to the overall meaning. Thus, the original meaning of 確 suggested something as solid and reliable as a stone. This evolved to represent certainty and the state of being confirmed.