cold-blooded

blood whose temp changes with the external air/water temp; OR cruel, unkind

crescendo

rising in volume or pitch higher and higher

tranquility

peacefulness

submerge

to put underwater fully

uncanny

beyond normal human abilities, supernatural, weird

hypnotize

to put into a sleep-like state where you do whatever the person tells you to

mirth

happiness, joy, laughter

raucous

extremely loud, shrill, sharp

spiel

a speech that is used to try to get someone to do/buy something

conviction

a strong belief

vulnerable

easily hurt or injured