to fail to adapt to a new environment, such as the local climate or diet; to feel ill or uncomfortable due to a change in surroundings

to be unaccustomed to the climate, water, food, or general environment of a new place

to deny a crime; to refuse to admit one's guilt

to refuse to admit one is old; to be old in years but remain young in spirit or determination

Unwilling to accept a loss or to give up; to have a competitive spirit.

(idiom) coercion will never result in truly convincing people; to suppress others without gaining their heartfelt submission

To be unable to adjust to or tolerate certain types of food; to not be accustomed to eating something.

to stubbornly refuse to obey or follow orders; contumacy

feeling indignant or defiant because one does not accept a result or situation; recalcitrant; rebellious