inferior - Low in rank, status, imprtance, or quality.
rundown - Being in very bad condition, after not being taken care of.
steadfast - Loyal and devoted, especially in difficult times.
vicious - Dangerously aggressive, cruel, and violent.
vertigo - A feeling of being off-balance, dizzy, and spinning.
bootcamp - A type of physical training that consists of many different types of exercise; or a short course of intensive study designed to provide someone with new skills
falter - To lose strength or momentum; to weaken or stumble; to hesitate in action, purpose, or speech.
paradox - A situation or idea that seems strange because it involves two aspects that are very different and seem to contradict each other, and both may be true.
momentary - Lasting for a very short time.
reimburse - To pay back money to someone who has spent it for you or lost it because of you.
substantial - Of considerable importance, size, or worth; or strongly built or solid in structure.
surplus - The quantity of goods or assets exceeding the demand or requirement.