As adjectives the difference between succinct and sententious

is that succinct is brief and to the point while sententious is full of meaning.

As adjectives the difference between inexperienced and untrained

is that inexperienced is not experienced; lacking knowledge or experience; green while untrained is lacking training, not having been instructed in something.

As adjectives the difference between sound and unused

is that sound is healthy while unused is not used.

As an adverb sound

is soundly.

As an interjection sound

is yes; used to show agreement or understanding, generally without much enthusiasm.

As a noun sound

is a sensation perceived by the ear caused by the vibration of air or some other medium.

As a verb sound

is to produce a sound.

As a proper noun Sound

is the strait that separates Zealand (an island of Denmark) from Scania (part of Sweden); also sometimes called by the Danish name, Øresund.

Captious is a related term of condemnatory.

As adjectives the difference between captious and condemnatory

is that captious is (obsolete) that captures; especially, (of an argument, words etc) designed to capture or entrap in misleading arguments; sophistical while condemnatory is serving to condemn or censure.

Lessen is a related term of smother.

In lang=en terms the difference between lessen and smother

is that lessen is to become less while smother is figuratively: to perish, grow feeble, or decline, by suppression or concealment; be stifled; be suppressed or concealed.

As verbs the difference between lessen and smother

is that lessen is to make less; to diminish; to reduce while smother is to suffocate; stifle; obstruct, more or less completely, the respiration of.

As a noun smother is

that which smothers or appears to smother, particularly .

Cool is a related term of enliven.

As an acronym cool

is (computing) clips object]]-oriented [[language|language .

As a verb enliven is

(obsolete|transitive) to give life or spirit to; to revive or animate.

Unmentionable is a related term of infernal.

As adjectives the difference between unmentionable and infernal

is that unmentionable is not mentionable while infernal is of or relating to hell, or the world of the dead; hellish.

As a noun infernal is

(obsolete) an inhabitant of the infernal regions.

Move is a synonym of straggle.

As verbs the difference between Move and straggle

is that Move is to change place or posture; to stir; to go, in any manner, from one place or position to another while straggle is to stray from the road, course or line of march.

As nouns the difference between Move and straggle

is that Move is the act of moving; a movement while straggle is the act of straggling.

Ample is a related term of mountainous.

As adjectives the difference between ample and mountainous

is that ample is large; great in size, extent, capacity, or bulk; spacious; roomy; widely extended while mountainous is having many mountains; rough (terrain); rocky.

Hypochondriac is a related term of dismal.

As adjectives the difference between hypochondriac and dismal

is that hypochondriac is related to, or affected by hypochondria while dismal is disappointingly inadequate.

As a noun hypochondriac

is a person affected with hypochondria.