adulterate

corrupt, make impure, contaminate

ambidextrous

can use both hands, skillful

augment

make larger

bereft

deprived or sad because of a loss

deploy

organize

dour

gloomy, sullen

fortitude

courage, bravery

insidious

sneaky, sly, deceitful

intimation

hint

gape

staring with mouth wide open

gibe

mock, ridicule, tease

guise

mask, cover, disguise

opulent

rich, wealthy, decadent

pliable

flexible, bendy, changeable

reiterate

say again, repeat

stolid

unemotional, calm, impassive

tentative

uncertain

unkempt

untidy, dirty

warily

cautiously

verbatim

word for word, exact