1. DELIRIOUS (ADJECTIVE): frantic
Synonyms: excited, frenzied
Antonyms: balanced, rational
Example Sentence: He was delirious with joy.
2. DERANGE (VERB): disorder
Synonyms: addle, muddle
Antonyms: order, arrange
Example Sentence: This does not derange the numbers, since the order of succession is observed.
3. DEROGATORY (ADJECTIVE): insulting
Synonyms: dishonouring, disparaging
Antonyms: appreciable, honouring
Example Sentence: She refused to withdraw her derogatory remarks.
4. DESCENT (NOUN): going down
Synonyms: drop, plunge
Antonyms: ascent, climb
Example Sentence: That is a steep descent.
5. DESPICABLE (ADJECTIVE): contemptible
Synonyms: shameful, vile
Antonyms: honorable, reputable
Example Sentence: He said that it was a despicable crime.
6. COMBAT (VERB): battle
Synonyms: fight, war
Antonyms: compromise, negotiate
Example Sentence: The residents of the town tried to combat the government’s plans to build a motorway.
7. COMMEMORATE (VERB): memorize
Synonyms: remember, memorialize
Antonyms: forget, neglect
Example Sentence: This inscription commemorates those who died.
8. CONCILIATORY (ADJECTIVE): placatory
Synonyms: appeasing, mollifying
Antonyms: aggravating, instigating
Example Sentence: The next time he will use a conciliatory tone.
9. COMPLIANT (ADJECTIVE): obedient
Synonyms: docile, pliant
Antonyms: obstinate, stubborn
Example Sentence: My brother is a compliant boy.
10. COMPETENCE (NOUN): capability
Synonyms: ability, proficiency
Antonyms: bluntness, dullness
Example Sentence: I regard him as a man of integrity and high professional competence.