筋がいい (すじがいい) Japanese meaning | KotomoraMeanings
1
expression, i-adjective (yoi/ii class)
having an aptitude (for); having a talent (for)
Describes someone who shows natural promise or a good foundation in a skill, sport, or art. Often used when evaluating potential.
に
上
達
する
だろう
。
That newcomer has a good foundation, so they'll improve quickly.