Dogmatic means arrogantly authoritative or overbearing. His dogmatic and demanding personality did not fit in well here. Pragmatic means practical. Pat takes a pragmatic approach to teaching children.
be out of one’s brain—(sl.) be very drunk (also: be out of one’s scull): By the time I arrived at the party he was out of his brain. have brains —(coll.) be very smart and intelligent: Don’t be fooled by her pretty appearance alone, this girl has brains to match!
Dog-eat-dog-world is the correct phrase. It means that the world is ruthlessly competitive and derives from a sixteenth century proverb that people may revert to the animal laws of survival. With shrinking markets, it’s now a dog-eat-dog world for many companies.
Doctor refers to anyone who has been granted a doctor’s degree. Physician is a general term for a doctor of medicine, someone legally qualified to practice medicine. All physicians are doctors of medicine, but not all doctors practice medicine.
Deny, gainsay, contradict, negative, traverse, impugn, contravene are comparable as meaning, when they refer to an act, to declare something untrue, untenable, or unworthy of consideration or, when they refer to a condition, to go counter to what is true or to the facts as they are.
Distinct means clearly apparent, discrete, separate, or obvious. A distinct improvement in giving helped many families last year. Distinctive means distinguished or standing out as different. Hayward’s distinctive voice has won the band many fans.
Dissatisfied means not satisfied and has a critical connotation. They were dissatisfied with the food and service at the diner. Unsatisfied also means not satisfied, but doesn’t necessarily imply criticism. His hunger was unsatisfied despite the large meal he ate.