Synonyms and Antonyms of fiend
1
a mean, evil, or unprincipled person - a crime committed by some fiend
baddie (or baddy), beast, brute, devil, evildoer, heavy, hound, knave, meanie (also meany), miscreant, monster, nazi, no-good, rapscallion, rascal, reprobate, rogue, savage, scalawag (or scallywag), scamp, scoundrel, varlet, villain, wretch
villainess
blackguard
criminal, crook, culprit, felon, lawbreaker, malefactor, offender, perp, perpetrator, transgressor
sinner, trespasser, wrongdoer
cad, heel, serpent, snake, viper
bandit, bravo, desperado, outlaw
con, convict, jailbird
assassin, cutthroat, gangster, goon, gunman, hoodlum, hooligan, racketeer, ruffian, thug
rough, rowdy, tough
loser, lowlife, ne'er-do-well, stinker, trash
2
a person with a strong and habitual liking for something - Comic-book fiends seem to have their own little world.
addict, aficionado (also afficionado), buff, bug, devotee, enthusiast, fan, fanatic, fancier, fool, freak, habitué (also habitue), head, hound, junkie (also junky), lover, maniac, maven (also mavin), nut, sucker
groupie
admirer, amateur, collector, connoisseur, dilettante
authority, expert
adherent, convert, cultist, disciple, follower, hanger-on, votary
advocate, apostle, backer, champion, evangelist, exponent, friend, patron, promoter, proponent, supporter
partisan (also partizan), zealot
booster, rooter, well-wisher
faddist
3
an evil spirit - the legend that a fiend continues to haunt the castle
vampire
incubus, nightmare, succubus
genie, jinni (or jinn)
apparition, banshee, bogey (also bogie), bugbear, familiar, familiar spirit, genius, phantasm (also fantasm), phantom, poltergeist, shade, shadow, specter (or spectre), spirit, spook, vision, wraith
brownie, dwarf, elf, faerie (also faery), fairy, fay, gnome, goblin, gremlin, hobgoblin, kobold, leprechaun, pixie (also pixy), puck, sprite, troll
monster, ogre
4
the supreme personification of evil often represented as the ruler of hell - He swore that not even the fiend could tempt him to eat that dessert.
5
a person with a high level of knowledge or skill in a field - Our in-house computer fiend fixed the problem in no time.
ace, adept, artist, authority, cognoscente, connoisseur, crackerjack (also crackajack), expert, geek, guru, hand, hotshot, maestro, master, maven (also mavin), past master, scholar, shark, virtuoso, whiz, wizard
pro, professional
consultant, hired gun, specialist
addict, aficionado (also afficionado), buff, devotee, enthusiast, fan
craftsman, journeyman
jack-of-all-trades, Renaissance man
mistress
