I am a honest man, amn't I? or
I am a honest man, aren't I?
Thank you
***** NOT A TEACHER *****
"Good" English:
I am an honest man,
aren't I?
I am an honest man,
am I
not?
"Bad: English (used by some native speakers):
I am an honest man,
ain't I?
("Educated" people use "ain't" only when they are trying to be
humorous. Most -- NOT all -- people are embarrassed to use
"ain't." I have no doubt that a person who regularly uses "ain't"
would never be elected to high political office in this country.
We once had a president named Wilson. He reportedly said (in private)
such things as "She
don't like him." But he always said "She
doesn't like him" in public. As a
non-teacher and a fellow
student of English like you, I respectfully suggest that you
not use "ain't" -- except when you are in a humorous mood.)
P.S. The scholar George O. Curme (writing in the 1930's) says
that the spelling
amn't is sometimes used in Ireland in the first
person singular:
Amn't I after telling you she's a great help to her mother?
(Lennox Robinson,
The Whiteheaded Boy)