1
abrasive
rough; coarse; harsh
2
bilk
cheat; defraud
3
covert
hidden; undercover
4
engender
cause
5
hangar
storage area (like garage) for a plane
6
knotty
complex; difficult to solve
7
nuance
something subtle; a fine shade of meaning
8
plagiarism
taking credit for someone else's writing or ideas
9
renown
fame
10
tangent
going off the main subject