tenacity

noun tenacity

• adulthood — Adulthood is the state of being an adult.
• arbitrariness — subject to individual will or judgment without restriction; contingent solely upon one's discretion: an arbitrary decision.
• backbone — Your backbone is the column of small linked bones down the middle of your back.
• bravura — If you say that someone is doing something with bravura, you mean that they are using unnecessary extra actions that emphasize their skill or importance.
• bravure — Music. a florid passage or piece requiring great skill and spirit in the performer.