Educational

esteemable

[ih-stee-muh-buhl]

worthy of respect

rebuke

[ri-byook]

to express sharp, stern disapproval of; reprove; reprimand

abnegation

[ab-ni-gey-shuhn]

the act of relinquishing or giving up a right, possession, etc.

exacerbation

[ig-zas-er-bey-shuhn]

the act of making a negative situation feel worse than it is

incessant

[in-ces-ant]

unending

wormhole

[wurm-hohl]

a hole made by a burrowing or gnawing worm, as in timber, nuts, etc.

coulee

[koo-lee]

a lava flow

grasp

[gr-asp]

to seize or hold something firmly; also to understand or comprehend an idea.

isthmus

[is-muhs]

a connecting, usually narrow, part, organ, or passage, especially when joining structures or cavities larger than itself

aerostat

[air-uh-stat]

an airship or hot-air balloon, especially one that is tethered