an official licence from the government giving one person or business the right to make and sell a particular article and to prevent others from doing the same
inextricable
Difficult or impossible to disentangle or untie
discreet
wise, cautious and not saying anything which might cause trouble
surreptitious
marked by quiet and caution and secrecy
alacrity
Cheerful willingness; eagerness
manifest
Clearly apparent to the sight or understanding; obvious