大（da）
Name meaning
大 (da) means great, large, broad or important. In a given name it should suggest breadth of mind, generous scale and capacity, not boasting or literal size.
Practical naming use
Use 大 (da) when the name should feel broad, open and capable. It suits public service, teaching, leadership, scholarship or a plain strong identity. Pair it with a character that gives the greatness a moral or cultural direction.
Pairing guide
Pair 大 (da) with a character such as 大安 (Daan) Da'an, 大文 (Dawen), 大明 (Daming) or 大德 (Dade). Avoid a second grandiose character if the name starts to sound inflated.
Reference
MOE Revised Mandarin Dictionary, 大器晚成 (da qi wan cheng)
Historical / name-use references
大慧宗杲 (Dahui Zonggao)
Dahui Zonggao (1089-1163) was a Song Chan master listed in the DILA Buddhist Authority Database. His religious name gives direct premodern name-use evidence for 大 (Da).