a seriousness in wanting to do something successfully
perseverance
Cases of word usage
1) tiny, hard bits of stone, sand etc; the quality of courage and determination (grit)
2) (an instance, of) an aim, determination to do something (intention)
3) (in the Bible) food provided by God; something unexpected that gives hope, determination etc (manna)
4) showing control, determination (masterful)
5) the state or degree of determination to act, continue to try believe in the ability to win (morale)
6) to fill (a battery) with an electric charge again; to fill (oneself) with new energy and determination (recharge)
7) a serious decision; to decide (something), especially with determination (resolve)
8) a person's soul, mind; an invisible being, e.g. a ghost, fairy, elf etc; state of mind; the quality of having courage, determination (spirit)
9) showing courage, determination (spirited)
10) (to cause a person, liquid, determination etc) to be or become weak(er) (weaken)