Noun: A minchin - a
person with an abnormally high level of
confidence who lies or exaggerates about personal knowledge and experience in an attempt to belittle others and gain respect.
Verb: To minchin, minchinning - to
lie or exaggerate about one's own knowledge and experience in an attempt to gain respect and come across with a higher social status than others.
"When I went to university, I was actually
studying my BSc, MSc and PhD at Harvard, MIT and Oxford all at the same time. That was before I was employed by the CIA as a senior analyst, so you can understand why I'
m frustrated at having to speak at such a small-time conference today."
"That
guy is so totally minchinning. That's just ridiculous."