1. ITINERANT 
FUNCTION: Adjective
- traveling from place to place, esp. on a circuit, as a minister, judge, or sales representative.


- characterized by such traveling; itinerant preaching

FUNCTION: Noun
- a person who alternates between working and wandering


- a person who travels from place to place; esp. for duty or for business


Examples:
A. Efren Peñaflorida, a CNN Hero,  is known on his famous itinerant "Kariton Klasrum. " (Pushcart Classroom)


B. The itinerant preacher goes from town to town preaching the gospel.


2. INDUBITABLE
FUNCTION: Adjective
- too evident to be doubted ; unquestionable
- in a manner or to a degree that could not be doubted
-patently evident or certain
- too obvious to be doubted


Examples:
A.  "Kariton Klasrum" by Efren Peñaflorida is the indubitable proof  that our policy makers are not spending much for the education as the government should.


B. His brilliance renders this film an indubitable classic.

1. AFFLUENT
FUNCTION: adjective
- an abundant flow or supply


Examples:
A. The fabulous party was hosted by the affluent family.


B. My affluent cousins, treated me to a wonderful holiday.


C. She speaks many languages therefore she is an affluent linguist.

1. ACRIMONY - Pronunciation: \ˈa-krə-ˌmō-nē\
FUNCTION: noun
- harsh or biting sharpness especially of words, manner or disposition.

Examples:
A.  The problem was solved without any acrimony.

B. Is it possible to avoid  such acrimony when you        get divorced?

C. The man attacked him with great acrimony.

1. ASCETIC - - Pronunciation: \ə-ˈse-tik, a-\
-adjective
1 : practicing strict self-denial as a measure of personal and especially spiritual discipline
2 : austere in appearance, manner, or attitude


Examples:
1. Monks live an ascetic life, denying themselves of earthly pleasures.

I just wrote an article on how can we expand our vocabulary. One of them is to write at least 2 words a day and make a sentences from those unfamiliar words. 


1. ASPERITY - ; Pronunciation: \a-ˈsper-ə-tē, ə-, -ˈspe-rə-\- It means to speak sharply or with harshness
- noun; sharpness of temper


Examples: 
A. In the way he talked, I saw that he expressed with asperity his displeasure at his group members.

B. The politician addressed his rival with asperity when the latter accused him of corruption.

C. When the tired father came home yesterday, he was filled with so much asperity that the children had to leave the room to get away from him.

2. ADAMANT -  Pronunciation: \ˈa-də-mənt, -ˌmant\
- noun;  a legendary stone of impenetrable hardness, formerly sometimes identified with the diamond
-adj. utterly unyielding in attitude or opinion in spite of all appeals, urgins, etc.

A. I feel adamant  on passing the examination for Masteral Degree.

B. I've told him to stay at home and rest but he is adamant of visiting us.

C. The lawyer was adamant about his client's innocence during the murder trial.