noun, noun which may take the genitive case particle 'no'
young and spirited; youthful and energetic
Describes a young person full of vigor, drive, and enthusiasm. Often used in formal or written contexts to praise youthful energy.
彼は年少気鋭の研究者として注目されている。
He is attracting attention as a young and spirited researcher.
年少気鋭のチームが新しいプロジェクトを立ち上げた。
A young and energetic team launched a new project.
A four-character compound combining 年少 (young, juvenile) and 気鋭 (spirit, sharpness). The exact historical derivation is uncertain; it is a relatively modern literary expression.