Terse; concise and clear — expressed simply and understandably without unnecessary details.
説明は簡明にまとめてください。
Please summarize the explanation concisely.
この報告書は簡明で読みやすい。
This report is concise and easy to read.
簡明に言えば、問題は資金不足です。
Put simply, the problem is lack of funds.