A transgression is a violation of some rule or law. When you break the law, you are committing a transgression.
Teller is a word that is used to describe someone who works at a bank or a store. Teller is also used to describe someone who works at a casino, or who sells tickets to events.
A fleeting moment is a short period of time that is quickly gone. A fleeting moment can be a happy moment, or it can be a moment of sadness.
To subtly something is to do it in a way that doesn't cause too much attention or notice. When you subtly insult someone, you are saying negative things without actually saying them out loud.
A transdermal drug is a drug that is applied to the skin. This means that it enters the body through the skin.
To cheaply is to spend a small amount of money on something. Sometimes people use the word to describe the act of spending too little money on something that is important.