- Satan; the devil.
- any evil spirit; demon.
- a diabolically cruel or wicked person.
- a person or thing that causes mischief or annoyance: Those children are little fiends.
- a person who is extremely addicted to some pernicious habit: an opium fiend.
- a person who is excessively interested in some game, sport, etc.; fan; buff: a bridge fiend.
- a person who is highly skilled or gifted in something: a fiend at languages.
- to desire greatly: just another junkie fiending after his next hit;As soon as I finish a cigarette I'm fiending to light another.
- an evil spirit; demon; devil
- a person who is extremely wicked, esp in being very cruel or brutal
- informal
- a person who is intensely interested in or fond of something
- an addict
- a mischievous or spiteful person, esp a child
- the devil; Satan
