attest
to declare or be evidence of something as true, genuine, or accurate
axiom
a statement or principle that is so obvious that it’s true with no proof needed.
churlish
lacking good manners
concoct
to make up, prepare or invent
derivative
something that results from an earlier form or condition
differentiate
to see the difference
disparage
to criticize in a negative, disrespectful manner
dissipate
to spread out so thinly that it disappears
esoteric
not generally known or understood
olfactory
relating to the sense of smell
plethora
too great in number
refurbish
to make like new
secrete
to produce and give off
vagary
a departure from the normal, expected course
volatile
evaporating quickly (挥发)