そしつ素質soshitsu
1.

A fundamental quality or trait present in a person that indicates their potential to develop specific abilities or excel in particular areas, often referenced in the context of suitability for a profession or craft.

2.

An innate characteristic that shapes an individual's natural inclinations and talents, which can be nurtured to achieve future accomplishments, such as in the realms of art or academia.

3.

The inherent state or condition of something, particularly in relation to its basic form or essential nature, which can also refer to physical attributes like complexion.

Example:

私は優れた彼の妻になる素質がある。