了解（りょうかい、ryoukai）
- understanding

The Japanese word 了解 了解 means "understood," "got it," "acknowledged," or "I understand." It signifies that someone has received and comprehended information, a request, or an instruction. It indicates agreement and a willingness to comply or take action. 了解 is a versatile word, used in various contexts from casual conversations to formal business settings. It is a common and essential phrase in Japanese communication.

⚫︎はい、了解しました。 Translation: Yes, I understand. ⚫︎会議の議題は了解しました。 Translation: I understood the agenda for the meeting. ⚫︎ご指示、了解いたしました。 Translation: I have understood your instructions. (More formal)

⚫︎ 了解 is used to indicate that you understand something that has been communicated to you. ⚫︎ It can be used in both formal and informal situations, though the level of formality might influence the specific phrasing. ⚫︎ In formal settings, you might use 了解しました or 了解いたしました to show respect. ⚫︎ In casual conversations, you can simply say 了解. ⚫︎ You can use 了解 as a response when someone gives you instructions, asks a question, or provides information.

⚫︎ The word is typically written as 了解 in kanji. ⚫︎ The reading is りょうかい in hiragana. ⚫︎ It's not usually written in katakana. ⚫︎ The okurigana (the suffix hiragana) is always かい.

⚫︎ 承知しました (しょうちしました) - I understand / I acknowledge (Formal) ⚫︎ わかりました (わかりました) - I understand (Common) ⚫︎ かしこまりました (かしこまりました) - Certainly / Understood (Very Formal) ⚫︎ 承知いたしました (しょうちいたしました) - I understand / I acknowledge (Very Formal)

⚫︎ わかりません (わかりません) - I don't understand ⚫︎ 理解できません (りかいできません) - I can't understand

明日の会議の資料は、もう送りました。了解しましたか？ ・Translation: I already sent the materials for tomorrow's meeting. Did you understand? ・Explanation: This sentence uses 了解 to ask if the recipient has understood something.

ご指示、了解いたしました。ただいま、準備に取り掛かります。 ・Translation: I have understood your instructions. I will begin preparations immediately. ・Explanation: This sentence demonstrates a formal usage, showing both understanding and action.

The word 了解 is a compound word. ⚫︎ 了 means "completion" or "finish". ⚫︎ 解 means "understanding" or "explanation". Therefore, 了解 literally means "to finish understanding" or "to fully comprehend."