As nouns the difference between acumen and astuteness

is that acumen is quickness of perception or discernment; penetration of mind; the faculty of nice discrimination while astuteness is the quality of being astute.

As an adjective derogatory

is tending to derogate, or lessen in value of someone; expressing derogation; detracting; injurious.

As a noun derogatory

is a trade-line on a credit report that includes negative credit history.

As a verb maligning is

.

As adjectives the difference between repugnant and infamous

is that repugnant is repugnant while infamous is having a bad reputation, disreputable; of bad report; notoriously vile; detestable; widely known, especially for something bad.

As a verb repugnant

is .

As nouns the difference between to and fealty

is that to is thaw, weather conditions that make snow and ice melt while fealty is fidelity to one's lord; the feudal obligation by which the tenant or vassal was bound to be faithful to his lord; fidelity; allegiance; faithfulness.

As adjectives the difference between pleasant and acceptable

is that pleasant is giving pleasure; pleasing in manner while acceptable is capable, worthy, or sure of being accepted or received with pleasure; pleasing to a receiver; gratifying; agreeable; welcome; as, an acceptable'' present, one ''acceptable to us.

As a noun pleasant

is (obsolete) a wit; a humorist; a buffoon.

As nouns the difference between malformation and deviation

is that malformation is an abnormal formation while deviation is the act of deviating; a wandering from the way; variation from the common way, from an established rule, etc.; departure, as from the right course or the path of duty.

As a verb seasoned

is (season).

As an adjective seasoned

is experienced, especially in terms of a profession or a hobby.

As a conjunction of is

(subordinating ) whether, if.

As nouns the difference between ornamentation and finery

is that ornamentation is decoration, adornment or embellishment while finery is (obsolete) fineness; beauty.

As adjectives the difference between mannered and unreal

is that mannered is having manners or (often excessive) mannerisms while unreal is fake; not real.

As nouns the difference between pretence and airs

is that pretence is an act of pretending or pretension; a false claim or pretext while airs is plural of lang=en.

As a verb airs is

third-person singular of air.