an unknown and unexplored region
anyone who does not belong in the environment in which they are found
a variable whose values are solutions of an equation
not known
being or having an unknown or unnamed source
not known to exist
not famous or acclaimed
not known before
"Bank on a life, saving towards the certainty of change Ledger all the happiness, pencil in to rearrange Withdraw all the worry Deposit all the faithCompound all the experience and Recognize when the payment is late."
