Going under cover to catch a criminal such as a police officer posing as a prostitute inorder to catch people trying to pick them up.
Operational is something that is in use. Operational also mean ready for use.
moral
dissolvable
mass
A definiton is a brief precise statement of what a word or expression means, e.g. in a dictionary sometheing to explain !
style and coolness.
To be in agreement or harmony
Ennui is the definition of boredom.
they are kool...
It is the past of the verb to come.
dividend
something that you know