Adjective
regimented - Referring to something that is arranged in a highly structured or ordered manner, often with little room for flexibility or deviation.

He was determined to lose weight, and he realized that he could accomplish this only with a regimented approach to exercize and diet.
caustic - Sarcastic or severely critical, often in a hurtful or biting manner; or able to burn or corrode organic tissue, typically referring to chemicals or substances.

The caustic chemical spilled onto the floor and quickly started to eat away at the floor surface.