1.Grapple

Meaning: fight without weapons

Synonym: clasp, clench

Sentence: “after a grapple with his conscience, he confessed to having an affair”

2.Incongruous

Meaning: not appropriate for a particular occasion or situation

Synonym: amiss 

Sentence: “there's an incongruous modernism to the actor's performance in this period piece”

3.Indomitable

Meaning: incapable of being defeated, overcome, or subdued

Synonym: bulletproof, invincible

Sentence: “an indomitable spirit was needed to endure the rigors of pioneer life.”

4.Meliorate

Meaning: to make better

Synonym: better, enhance

Sentence: “regulations intended to meliorate the working conditions of migrant farm laborers”

5.Persiflage

Meaning: good-natured teasing or exchanging of clever remarks

Synonym: backchat, jesting

Sentence:  “Her cunning persiflage hurt them.”

6. Relegate

Meaning: to force to leave a country

Synonym: deport, exile

Sentence:  “courtiers and generals who incurred the emperor's disfavor were soon relegated to the farther reaches of the empire”

7.Rhapsody

Meaning: a state of overwhelming usually pleasurable emotion

Synonym: cloud-nine, elatedness

Sentence:  “listening to Mozart always left him in a rhapsody that lingered for the remainder of the evening”

8.Writhe

Meaning: to cause to twine about one another

Synonym: entwine, inter-lace

Sentence: “tends to writhe his fingers together when he's nervous or upset”

9.Undulate

Meaning: having a wavy surface, edge, or markings

Synonym: swing, wave

Sentence: “the undulate margin of a leaf”

10. Wherewith

Meaning:  that with or by which —used with an infinitive

Sentence:  “metal tools wherewith to break ground”