1. primeval /prɑɪˈmi·vəl/ adj.
existing at or from a very early time; ancient:
primeval forests

2. colloquial /kəˈloʊ·kwi·əl/ adj.
(of words and expressions) informal and conversational, and more suitable for use in speech than in writing

3. potable /ˈpəʊ.tə.bl̩/ adj.
clean and safe to drink:
potable water

4. ostracize /ˈɑs·trəˌsɑɪz/ v.
to prevent someone from being part of a group because you dislike the person or disapprove of something the person has done:
She was ostracized by fellow officers after bringing charges against her partner.

5.impeccable /ɪmˈpek·ə·bəl/ adj.
without mistakes or faults; perfect:
impeccable manners/taste

6. ephemeral /ɪˈfem·ər·əl/ adj.
lasting for only a short time:
ephemeral fame

7. garrulous /ˈgær·ə·ləs/ adj.
having the habit of talking a lot, esp. about unimportant things:
I had talked too much about myself and felt like a garrulous old fool.

8. meticulous /məˈtɪk·jə·ləs/ adj.
giving or showing careful attention to every detail:
a meticulous housekeeper

9. nebulous /ˈneb·jə·ləs/ adj.
(esp. of ideas) unclear and lacking form; vague:
a nebulous concept

10. sagacious /səˈɡeɪ.ʃəs/ adj.
having or showing understanding and the ability to make good judgments:
a sagacious person/comment/choice

11. specious /ˈspi·ʃəs/ adj.
seeming to be right or true, but really wrong or false:
His whole argument is specious.
 
12. redundant /rɪˈdʌn·dənt/ adj
more than what is usual or necessary, esp. using extra words that mean the same thing:
My English teacher was merciless if what we wrote was abstract, sentimental, or redundant.

13. repudiate /rɪˈpjud·iˌeɪt/ v.
to refuse to accept or obey something or someone; reject:
The evidence presented at the trial has since been repudiated.

14. protagonist /proʊˈtæg·ə·nɪst/ n.
an important character in a story or play

15. antagonist /ænˈtæg·ə·nɪst/ n.
a person who opposes or disagrees with another

16. viable /ˈvɑɪ·ə·bəl/ adj.
able to exist, perform as intended, or succeed:
The company had to seek other ways to remain viable.

17. catharsis /kəˈθɑr·sɪs/ n.
the experience of expressing strong emotions that previously were blocked:
It’s the director’s hope that Germans who see his movie will go through a catharsis similar to his own.
 
18. dearth /dɜrθ/ n.
an amount of something that is too small: a lack:
The region is suffering from a dearth of medical specialists.

19. guile /gɑɪl/ n.
the practice of deceiving people or using other dishonest methods to achieve your aims, or the ability to deceive people for this purpose:
He is a simple, honest man, totally lacking in guile.

20. lethargic /ləˈθɑr·dʒɪk/ adj.
lacking in energy; feeling unwilling or unable to do anything

21. affinity /əˈfɪn·ɪ·t̬i/ n.
a close similarity between two things, or an attraction or sympathy for someone or something, esp. because of shared characteristics:
Many people really feel an affinity for/with dolphins.

22. affluent /ˈæfˌlu·ənt/ adj.
having a lot of money or possessions; rich:
We live in an affluent neighborhood.

23. dichotomy /dɑɪˈkɑt̬·ə·mi/ n.
the division of two things that are completely different:
I try to examine the dichotomy between what people think they are and what they do.

24. enigma /ɪˈnɪg·mə/ n.
someone or something that is mysterious and impossible to understand:
He is an enigma to most people.

25. banal /bəˈnæl/adj.
too often used in the past and therefore not interesting:
He just sat there making banal remarks all evening.