Incongruous means incompatible; not harmonious; inconsistent.

For example, “Keith felt that the new design for the headquarters building was an incongruous mix of modern and baroque.“

Impervious means impenetrable; not capable of being affected or disturbed.

For example, “Keith said he was impervious to jet lag and that sleep was for losers.“

Deleterious means causing harm or damage, often in a subtle or unexpected way.

For example, “Keith felt that the CFO’s new strategy would have a deleterious effect on next quarter’s sales.“

Hegemony means leadership or dominance over another person, group, country, etc.

For example, “Keith felt that his sales team’s hegemony in the Northwest was being threatened by a competitor that just moved into Seattle.“

Germane means fitting; relevant and appropriate.

For example, “The CEO politely reminded Keith to keep his comments germane to the topic being discussed in the meeting.“

Caustic means sarcastic in a scathing and bitter way.

For example, “The CFO’s caustic remarks cut Keith to the core.“

Redound means to contribute greatly to a person’s credit or honor.

For example, “Keith would only join committees whose work would redound to his reputation for efficiency.“

Lackadaisical means lacking enthusiasm and determination; carelessly lazy.

For example, “Keith’s lackadaisical attitude toward filling out expense reports got him in trouble more than once.”

Pedagogical means relating to teaching or education.

For example, “Keith wanted to be known for his pedagogical skills, which is why he constantly lectured the interns.”

Hobbyhorse means a preoccupation or favorite topic to which someone constantly refers.

For example, “The sales staff was tired of Keith talking about winning the lottery, one of his many hobbyhorses.”