na-adjective
A direct loanword used in Japanese to describe something or someone that shows potential or is likely to succeed. Often used in business, sports, or talent contexts.
彼はプロミッシングな若手選手だ。
He is a promising young athlete.
この新技術はとてもプロミッシングだ。
This new technology is very promising.
有望 is the native Japanese equivalent and is more common in formal writing. プロミッシング is a loanword that carries a slightly more modern or trendy nuance.
Borrowed from English 'promising'.