an organ-like musical instrument having a keyboard that operates steam whistles

actual; real; capable of being perceived by the senses

acceptable to the mind

having an insatiable appetite for a thing or activity

an alteration or correction

the power to see things that are invisible to the senses

left over, as after the end of a process

to move slowly and unsteadily

a long, angry speech

one who has excess devotion to and enthusiasm for a cause or idea

impressive and magnificent; beyond ordinary

seemingly indifferent to pain, grief, or pleasure

the forwardmost units of an advancing army

intended to instruct, guide, or teach

of or relating to the eye or the sense of sight

harsh-sounding; hoarse

extravagant and abundant

difficult or impossible to understand

a short, heavy club with one end heavier than the other

The secret agent carried out certain duties that the average citizen might not consider to be __________________________.

The ___________ surgeon ignored the patient's cries of pain as he performed the delicate, yet painful, procedure.

The _________ caterpillars ate nearly every leaf on the tree.

The garage burned to the ground after a spark ignited the _______ fumes from an empty gasoline can.

The scientist spent half his life journeying around the world on a(n) ___________ quest in search of a lost city.

Antonym of
incomprhensible

Antonym of 
stoic

Antonym of
voracious

Antonym of 
gruff

Antonym of 
palatable