Merriment is a related term of sprightliness.

As nouns the difference between merriment and sprightliness

is that merriment is a state of enjoyable exuberance while sprightliness is the property of being sprightly.

Optimistic is a related term of healthy.

As adjectives the difference between optimistic and healthy

is that optimistic is expecting the best in all possible ways while healthy is enjoying health and vigor of body, mind, or spirit: well.

Convulsion is a synonym of commotion.

As nouns the difference between convulsion and commotion

is that convulsion is convulsion while commotion is a state of turbulent motion.

As verbs the difference between steep and ferment

is that steep is to soak an item (or to be soaked) in liquid in order to gradually add or remove components to or from the item while ferment is to react, using fermentation; especially to produce alcohol by aging or by allowing yeast to act on sugars; to brew.

As nouns the difference between steep and ferment

is that steep is a liquid used in a steeping process while ferment is something, such as a yeast or barm, that causes fermentation.

As an adjective steep

is of a near-vertical gradient; of a slope, surface, curve, etc. that proceeds upward at an angle near vertical.

As nouns the difference between terribleness and woe

is that terribleness is the characteristic of being terrible while woe is grief; sorrow; misery; heavy calamity.

As an adjective woe is

woeful; sorrowful.

Defender is a related term of picket.

As nouns the difference between defender and picket

is that defender is someone who defends people or property while picket is a stake driven into the ground.

As a verb picket is

to protest, organized by a labour union, typically in front of the location of employment.

Start is a related term of earthquake.

As an acronym start

is (law).

As a noun earthquake is

a shaking of the ground, caused by volcanic activity or movement around geologic faults.

Gifted is a related term of apt.

As an adjective gifted

is endow]]ed with special, in particular intellectual, [[ability|abilities.

As a verb gifted

is (gift).

As a noun apt is

.

As a proper noun apt is

.

Passing is a related term of unstable.

As adjectives the difference between passing and unstable

is that passing is that passes away; ephemeral while unstable is having a strong tendency to change.

As a verb passing

is .

As an adverb passing

is .

As a noun passing

is death, dying; the end of something.

Murky is a related term of veiled.

As a proper noun murky

is (murcki), a locale in poland.

As an adjective veiled is

hidden, such as by a veil.

As a verb veiled is

(veil).