Concise; expressing something briefly and clearly by omitting unnecessary words.
要点を簡潔にまとめてください。
Please summarize the main points concisely.
彼の説明は簡潔でとても分かりやすかった。
His explanation was concise and very easy to understand.
メールは簡潔に書いた方が良い。
It's better to write emails concisely.
簡潔に言えば、計画は中止になった。
To put it succinctly, the plan was canceled.