简（jian）
Name meaning
简 (jian), traditional 簡 (Jian), originally refers to bamboo slips used for writing, and by extension to selection, concise expression and refined simplicity. In a name it should suggest clarity and well-edited restraint, not emptiness or carelessness.
Practical naming use
Use 简 (jian) when the name should feel literate, clean and quietly confident. It suits writing, design, scholarship, law, planning or a personality that values order over display. The best pairings add warmth, culture or brightness.
Pair 简 (jian) with a character that gives the simplicity a human direction, such as 简文 (Jianwen), 简宁 (Jianning), 简明 (Jianming) or 简清 (Jianqing). Avoid another bare or cold character if the full name starts to feel too austere.
简文 (Jianwen): Jian contributes simple, selected; Wen adds culture, writing.
Reference
Shijing, Xiaoya, Chuche
Tang poem phrase cited in the MOE entry
Historical / name-use references
李簡 (Li Jian)
Li Jian is recorded in Taiping Guangji in an anecdote drawn from Youyang Zazu. The passage is useful here only as premodern personal-name evidence for 簡 (Jian)/简 (Jian), not as a model biography.