incredulous

skeptical; disbelieving

dour

sullen; gloomy

concede

to acknowledge as true, just, proper; admit

ponder

to consider something deeply

or thoroughly

intangible

not definite or clear to the mind

nonchalant

cool indifference or lack of concern;

casualness

disembark

to go ashore from a ship

constraint

to confine forcibly; to repress or restrain