treachery - A violation of allegiance, faith, or confidence; an act of deliberate betrayal.
underhanded - Dishonest or sneaky, often done in a secret or deceitful way.
unkempt - Messy or untidy in appearance, especially referring to hair or clothing, giving a neglected impression.
boor - A rude or insensitive person, who doesn't have good manners.
inevitable - Certain to happen and impossible to avoid.
addictive - The habit-forming quality of a substance or activity that causes someone to become dependent on using it or doing it.
optimize - To make the best and most effective use of a situation, opportunity, or resource.
vigil - Staying awake, aware, and watchful at times when it's more usual to sleep.
villain - A person who is considered wicked, cruel, or criminal; someone blamed for causing a particular problem or harm.
stuff - Unspecified or miscellaneous things: Things that are not specifically named or categorized.
partake - To become involved with or take part in something with other people
mortality - The state of being human and not living for ever