定（ding）
Name meaning
定 (ding) means settled, decided and inwardly composed. In naming it reads as steadiness and concentration, not rigidity.
Practical naming use
定 (ding) is a stability-and-decision character. It gives a name calmness, resolve and centered order, so the result feels composed rather than fixed in place. It is especially useful for cultural depth, classical or literary reference, personality image, because the character can carry a recognizable Chinese image without becoming empty dictionary filler. The best results come when the second character adds human direction, warmth, restraint or breadth, so the full given name feels lived-in rather than generic.
Pair 定 (ding) with characters such as 安 (an) for settled peace, 宁 (ning) for composed stability, 明 (ming) for clear resolve or 文 (wen) for cultivated calm. The second character should keep the name steady without making it inert.
定安 (Dingan): Ding contributes settled, stable; An adds peace, safety.
Historical / name-use references
鲁定公 (Duke Ding of Lu)
鲁定公 (lu ding gong) Duke Ding of Lu was a Spring and Autumn ruler. His title-name directly contains 定 (ding), giving the character an ancient political reference for settlement and order.