noun which may take the genitive case particle 'no', noun
Describes a quality, ability, or characteristic that someone or something possesses from the start, not acquired later. Often used with 性格, 才能, 明るさ, etc.
彼女の持ち前の明るさが周りを元気にする。
Her innate cheerfulness lifts the spirits of those around her.
持ち前の粘り強さで、ついに難関を突破した。
With his characteristic tenacity, he finally broke through the barrier.